I dunno if this is just me or what, but that is kind of a good one pocket shot, and one I use often because its nearly impossible for a double kiss even though it looks like the kiss is inevitable. Speed is the key IMO on this shot. The angle is the easiest part, you have such direct and immediate control over it. Im not saying I make it every time or condone such a move by beginners.... I recommend practice and judicious use. Its a lot like full-table cross-corner double-kiss banks.... powerful, sneaky and not for people that don't practice them.
I love Efren and know in my heart that he is among the finest to ever step to a table.
Lesh