I like Jeffs demos and classes. Too bad he is so worried about what other people will think of him, which sucks all of his carisma. In one of the classes it was like:
"You know, at some point you will start emulating other artists you like, you known, the old masters, Frazetta or even myself, you know. Some people like to say you're stealing some other artists style, but I prefer to say emulation, you know, stealing isn't very cool..."
I think he has the same energy of the boss from The Office. Maybe that why his art is boring (who cares about people dressed up as gypsies, anyway?) And it has nothing to do with his skill, which is great.