Thanks so much @Reaver ! Lucky you, you don’t have to wait 
I spent this evening sculpting beards and hair on the rest of the Warriors and on the hero. Very happy not just with the results but also with how I cut off PRECISELY the right amount of green stuff for today’s work.
I like to use the fine edge of my sculpting blade to do the texture on the beards, I think it makes them look like they have ringlets rather than dreadlocks - giving the models a look that’s kind of a synthesis of all the various styles of GW Chaos Dwarfs over the years. Hopefully they come out as a mix of features from the “small Chaos Warriors”, Big Hats, and masks eras.
I’m very glad I found @Xander’s gallery on the old website- without it my unit champion was just going to have a fancy helmet from the Chaos Knights kit; instead I’ve cribbed the idea of using the BFSP warrior champion and leaving some of his beard intact.
This lot only took about an hour to sculpt, which makes me wonder why I’ve been putting this off?!