He might me an arsehole, but his music is brilliant. I don't think his presonality really matters at all, and even if it does, you can best learn about it through his music, or actually knowing him personally.
Apparantly some guy went up to SW after a gig and did the "I'm your biggest fan speech" and he also said "I own all your records and I don't even own a record player!" SW called him a wierdo

poor guy.
I am too excited about this news about solo projects and whatnot. There are also reports of the guy from Dream Theater working with SW and the Opeth guy