Sounds like a really bad setup they have going. I wouldn't go to one of those classes. Not to be severly judging or anything, but I just don't see a guy with spikes in his lips and body piercings turning out to be a good teacher. Maybe that's just me growing up in a white-collar working class neighborhood, where nothing ever happens.

The strangest teacher I have is a guy who has a shaved head and is a semi-pro boxer in his spare time.