I've seen one of his tapes, it had A.) Some good material that I recognized as being from Share Key Lew on Qigong and B.) Some really funny stuff called poison hand that involved lacing your fingers together and jerking your arms really hard to hit a guy. Looked like a good way to break your fingers.
He does have an aggressive marketing system built out of his sight. His background includes learning from some well known Silat, Chen style and other MA types.
What I've seen is a real mixed bag from my perspective - some solid material mixed with weird misinterpretations like 'Baji requires a 'carrier' art to work.
I don't like to criticize unless something is completely bogus, like OYD, and I'd guess he must be pretty confident to have an open challenge out there. I'd like to hear how it goes if someone really good takes him up on it.
But from what I've seen, I'm a little skeptical. How much is my own prejudices, I can't really say.
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--- Napoleon
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"You're not gonna win a debate (or a fight) with MST. Resistance is futile." - Seven Star