Throwing this question out there because I don't train at a 10th Planet school, but obviously study the techniques. I'm really the only person at my school who uses a lockdown consistently and find a enough success w/it to the pt where I'll jump 1/2 guard, lockdown + sweep when I get frustrated w/handfighting. Was watching Brandon Vera get worked while Shogun was in his 1/2 guard and wondered why I almost never see lockdowns used. One notebale exception was rd 1 of Silva vs Sonnen 2. Silva controlled Sonnen's ground+pound for almost 4 mins using lockdown.