Anyone ever use this? There's a photo in the newest Grappling magazine, an article by Kesting. It looks similar to rubber guard, except that you reach *behind* your knee to your other hand, rather than both arms latching under the leg. This allows your shin to basically stay parallel to the guy -- much less stress on the knee, I would think. Basically it's like the standard over/under no-gi clasp, except that you go under one of your legs, in addition to the guy's arm. Sets up the omoplata and triangle. Looks to me like a nice way to play a rubber guard type game without blowing up your knees and back.