OK,
Here is the down low on this guy, I am from the Bay Area and always hear these two opinions about him from other musicians.
1. The guy is a genius and the greatest thing since sliced bread but you got to be into his style to really appreciate.
or...
2. The guy is a spoiled rich kid that inherted his dad's big car business money, he has no business being a musician and makes other Bay Area musicians look bad.
I have no opinion on the guy but I did see Slayer in 1994 at the Henry J Kaiser auditorium on the Divine Intervention Tour.