From the Double Bagger Sean Bollinger demonstrates a two-arm-in-triangle armbar setup for when your opponent tries to block you from going to the Straight Jacket off of the Double Bagger.
If you have the flexibility to pull off the Double Bagger then this could be a cool addition to your Rubber Guard game. Sean can actually put his leg behind his head while standing on the other leg just to give you a guide post.
As 10th Planet develops new techniques eventually counters are developed which leads to further innovations in the setups and offensive techs.
The two-arm-in-triangle is straight silly. You gotta have long legs for this one. Check it out !