IDK Jonathan Clark is CLOSE to the double eastbay... stupid close.
seems like he's practicing it nearly every day. I've seen JC get close (and Staples I think), but not Kilganon. I wouldn't put it past Kilganon though.. he may just try it one day and pull it off.
also i think chris staples is best "built" to land the 180 BTB/BTL, based on how he sick he is at 1spins and how fast he is.