All I know is I've personally seem him go from here's my first WIP to 'oh, casts are done!' on a couple of occasions at least. That doesn't sound like someone who is taking their time. Art takes time. You need to step away to gain perspective.
Can't argue with that but if that's the way the man whats to do business then that's his prerogative. I agree being able to see more WIP's and having some kind of collective input at each stage would more often than not improve a sculpt but that's not out call it's Rainman's. Just out of interest did you buy Iminime's Lector?