Although it would be nice if they put their website address at the bottom of the screen, you can still see what's going on here. This technique worked well for me in class until guys started to look for me to do it. It's a good one to surprise people with or to pull out in a chain of attempted escapes when they stop looking for it again.
Against a decent opponent you probably won't manage to sink this, but you will force him to posture up in defense and replace guard more easily. Against an opponent caught thinking they have you just because they are top side mount... =>