Okay, so the 10 second sleeve holding rule issues I see as a valid concern, and being a guard player myself I was wondering about it. From what I saw it didn't effect any of the matches, though. They warn you first, though, on all stalling issues, then give you 5-10 seconds to comply before giving a disadvantage (advantage to opponent), then another 5-10 seconds and you get -2 points, then an additional 5-10 and there is a DQ. Let go of one sleeve and grab it again and everything is fine. I think the website is a bit confusing on the "actual" rules. Choking rules are same as IBJJF, actually. Weirdest thing for me is the half guard passing thing. Knee bars would be nice, but it is what it is there. Oh and it was sorta weird that toe-holds were allowed at all levels. Fine with me (even though that's how I lost), just weird.