Well, these combos have been known for a while now, so nothing new there. The problem, however, is one of consistency.
First, you have to keep a constant eye on your boost meter to make sure you have enough. Secondly, the execution is considerably harder than just finishing with Tenha Kassatsu -> Ujoumoushouha (A version) and thus, in a close match, missing can equal defeat (wasted meter and wasted opportunity). Last, but not least, these juggles can miss on some of the characters, so you have to also keep this in mind.
