I think I posted this video a while ago. He did another 1 day build of some Battlestar models and showed just how fast he can work this stuff. It's brutal and dirty but the end result is undeniable. His workshop is out of this world. Everything a "maker" could want, every power tool or engineering/machining kit you can think of etc. and that's before you consider his prop collection which makes me drool.
To be honest with you most of that stuff is old hat nowadays, z brush is making pretty much all commercial model makers have a rethink. That figure was almost certainly z brushed and 3d printed rather than sculpted conventionally.
I can see a lot of the skills being gone in 10-15 years.