Yeah, it's pretty easy once you work your fingers into it. You can only get it off 5H, though, so it only really comes up after a CH something.
In combos I just focus on hitting the j.D>j.2K>K land H into PB, so my combos are mostly improv... Like, CH 2S>j.K jc>dj.K>dj.D>dj.2K>falling K>land H FBPB. That works really well on floaties.
To get them in the corner, IAD stuff works really well like, 2K>2H>BBU walk forward 5H IAD j.D>j.2K>falling K>5HS
Really, the less hits you have in a combo before you 5HS, the less frames they have to tech it, so I'm trying hard to make my aircombos as short as possible if I have tension/the right spacing for FBPB loop