Sure. Well, main advantage is it’s a second separate move instead of a march which is its own manoeuvre. For example you cannot combine marching with a turn or a reform. So you could use your regular move to do some manoeuvre and then use the reserve move to, well, actually move. Now, in case of skirmishing Wolf Riders most of this does not make a difference though.
But here is something which does: Position the Wolf Riders and Ring-Khan behind a hill or forest where they cannot be seen. You move around the forest or on the hill, use the ruby ring and some shortbows and reserve move back behind the hill/forest.
In short: where marching is its own manoeuvre which has to be done at once, reserve move gives you manoeuvre-shoot-manoeuvre. So you can do basically a march by reserve moving, but the flexibility allows you to do much more.
Well now I feel dumb and thought that reserve move replaced shooting. That’s big.
Oh, yeah well in that case I can understand your confusion, that would indeed change things a lot 
I find all the warmachines chaos dwarfs have very little effect. They dont win games like a giant monster iron daemon or even blorcs do.
So i am experimenting with allies as shataks can be immensely useful as well as the giant spawn
Our war machines don’t have it easy, that’s true.
Allies can be useful, but the metric of it all doesn’t make it easy. An allied contingent needs to follow all the normal army composition rules, so you need a general, 25% core and at least one non-character unit. Even a naked Aspiring Champion is 70pts, but is that really an effective model? Probably going for an Exalted Sorcerer. For core it’s probably going to be Marauder infantry or cav or War Hounds. You could get one Dragon Ogre in a skeleton 170pts allied contingent. Idk, is that really points well spent? Gigantic Chaos Spawn are awesome, but because of the same restrictions even for one without any Mark of Chaos you’d need minimum 580pts of allies, so you can’t even fit it in a 2000pts army.
edit
I had the rules for allies wrong, you only need one regular unit, not three. Makes it a bit better but still tough
There are also unit-by-unit breakdowns for WoC in the Big Chaos Dwarf tactics compendium
I’m looking at two options: a big fat sorcerer lord on chaos steed for max points (~250) and some dawgs. An extra level 4 which doesn’t count towards your general character allotment? Sign me up!
Or - and this is more relevant for an upcoming comped Tournament (@tusk 
) an aspiring champion on steed with GW and enchanted shield, three dawg units and three shartaks (I can get some use out of my long neglected bulltaur models). I could see that being a real nuisance, and I’d have a mighty 11 drops to out deploy pretty much any MSU build coming at me.
Naked lvl4 on steed is already 241pts, so no points for any equipment (not even one of the four marks). But yes, that’s powerful. A lvl3 would give a bit more breathing room and still be powerful, though. Might be worth considering.
Having inbuilt 4+ 5++ and three wounds is pretty legit.
Lvl 3 with mark of tzeentch for that sweet signature spell 
Its casting cost is 9+ though, so not reliable at all…
Anyway the tournament that’s coming up has a 25% lords 25% heroes comp (we know who they are), so I’m down to 125pts for the one character. A lvl 3 tzeentch guy is unreliable, nevermind a lvl 1 
So I’m going with the cheap horseman. Who knows, he may be able to sneak in and wreak some havoc.
Alright, fresh from the new FAQ about the Steam Tank:
Q: Before a Steam Tank charges, can it use the Steam Power
special rule to increase how far it can move?
A: No. The Steam Power special rule can be used instead of
marching by a model that cannot march. In other words, in
instances where most models or units would increase their
movement by marching, a Steam Tank can instead make use of the
Steam Power special rule. Charging is not such an instance.
This should put the Iron Daemon’s Lumbering Destruction question to rest once and for all.
Q: Can a Wizard with a Lore Familiar choose one of their
faction’s signature spells instead of the signature spell of their
chosen lore?
A: No
An equally big ruling we talked about a lot.
Hey there, joining the discussion here, since we usually play friendly matches but often strong lists.
From what I understand Ash storm can now now longer stack on a unit from 2 different sources, am I correct?
Cheers
Yes, each unit can only be affected once by Ash Storm, regardless how many would be in effect.
Also:
The skullcracker is now more viable! Even if it now definitively has a shoddy charge distance.
Yess!
Also, the Lamassu now officially have Armour Bane on their Stomps, is that right?
For its shooting too?
That it does! Huzzah!
Good point, what about the breath attack?
RAW breath weapon should have it too. Only spells are explicitly excluded.
Bull Centaur Taur’ruks have Armour Bane on their Impact Hits too.
Good that we have the new Q&A and Errata, but the legacy armies are not updated… And I fear GW will stick to their decision to not support them anymore and we are going back to the shelves…
That would be the stupidest thing they could possibly do. Old World is more successful than they ever imagined, whatever reason they had to exclude 40% of the factions, if anyone there has even the slightest business sense, they’re doing everything they can to reverse this asap.
So, obviously they’re sticking to their “no support whatsoever for legacy factions, unless correcting some flagrant spelling error or so” line which is stupid enough, but I do not fear the legacy factions going away.
No updates have it’s benefits, the face people make when they see how broken the Iron Daemon is, as well as the fact it is not going to be changed in the foreseeable future, is pretty worth it.
It’s not broken it’s just Chaos Dwarf engineered. They’re just jealous.