^^ Yes, 100% ac'able , you guys are using 66k?..isn't 99_33k better on recovery and faster?..
anyways, yeah the best way to mix this up(cant remember if its air tech-able the same way or if its just an AC'able mix up to another), but using 3b, 99_33k(fastest input), 11_77b,a..if they are thinking your gonna do the 44a,a ender, this will make 'em think twice if they should be Ac'ing out of it..just remember that if you 11_77b,a..Do NOT follow up with the last b in that string, it is blockable, UNLESS, they AC backwards(i think), then you got some normal standing attack options(or do the last b outta 11_77b,a,b)they can block it, so your semi-safe but will stuff anyone trying to get up and attack, so just mix that up with 11_77b,(a)MST, and you'll get much better results with a stance switch/and or stance attack option.
Genver: Hi!, im the guy that was at NEC with g0ofus/Vicious..if you dun remember me, i was the guy with the neck length hair you stood in front of on occasion, but thought you might have been blocking my view, impossible hun, i'm taller, hehehe..i shoulda lifted ya up on my shoulders so you could view the tourney in concert view style!
Oh, also..something i've been working with is 3b launching at its mid-ish hitting range, if you launch them with 3b and then do fastest input 4k, it will knock their asses pretty far away and will allow for some juicy far-mid hitting free mix-up attacks..nothing guaranteed after 4k, just free safe mid-far range mix-ups..test this for yourselves 1st so you get a feel for that 3b launch range..what i have gathered so far for it... it gives great opportunity for some free mix-ups for some GC/GB attacks..i'll get back with more from what i have installed into this version of launching 3b.
EDIT: as far as the 3b, 4k goes, yes they can stand block and which of course if the opponent knows this, you get some juicy post standing 66_33_99a+b cancels along with other stance cancel work, so work with with that until they catch on to just blocking..when they start blocking, is when the mix-up starts to work for you...but if they do anything but block, your getting guaranteed free hits that are non tech-able, they can only block...
sorry didn't know where else to post this coz its half set-up half combo...eh.