I have seen several styles, and have attended seminars of several different arts, but I would never say I have studied them, I have only been exposed to them.
That's the problem, some guys get a little training and then have suddenly mastered the art.
The school I hate the most around here is like that. The dude studied one art a long time ago. Now he hires people to teach other arts, he trains a little with them and claims to have mastered them. He also jumps on every bandwagon you could have jumped on in the past decade. He offers - EBMAS, Aerobic Kickboxing, Krav Maga, Mixed martial arts, Taichi, Yoga, and so on. It's also the kind of school where you have to pay 15$ just to go check out the class.
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I'd tell you to go to hell, but I work there and don't want to see you everyday.