I'm mostly referring to his system of pinning the bottom leg with a cross grip and using their defensive action with the top leg to transition, usually to a sort of proto leg drag or a smash pass, stack, or even just a half guard. Good, clear footage of Vieira passing is surprisingly uncommon, and the only guy a know that really does that much in the modern scene is Jackson Souza. Problem with Souza is that he overwhelming just goes for the smash from there and has a ton of matches that end with little or no scoring. I've watched all of Leo's instructionals (they include very little of this) and have pretty much given up on Kevin Howell's book getting released, so I was wondering if anyone here had some insight. I know we have a few Checkmat guys here, is that style used a lot in their gyms?