I see a number of different orgs now, 2 IMAF's, WMAA, WMAC, MARPPIO, AMAA, etc. Whats the differences between them really? I'm not asking who's "pure", or "the best". That's really a matter of opinion, and one I'd rather form on my own. What I'm looking for is, what are the differences between the groups? Does one focus more on stick over blade, or open hand over stick, etc.