Thanks, Hotshot.
I'm using an Opinel No. 6 for the detail, and a No. 7 for the roughing out. The hair on the beard I do with a knacker old V shaped mini-chisel (think I need to change it, as it's pretty much seen better days now). And, of course, everything is sharp. I'm spending as much time honing edges as I am carving/hacking ;-)