I didn't say it can't, the one that BRIG come with also can be tech rolled, I just follow the same logic. I'll try to find a non-techable crossup situation and I'll post here if I do.
* Ok I found something, not an untechable one, but something very tricky, If after a b3 you land a jip3, silly slide and the opponent tech rolled, and you jump in, you'll crossup the opponent sometimes, and sometimes not, that's because of the timming on landing de jip3.
Now the thing becomes more interesting when the opponent doesn't tech roll, you'll stand in a position where you look like you're in one side, but if u neutral jump 2 you'll crossup the opponent, and if u just stay there and take the risk(I said "take the risk" cause the opponent can wakeup attack u) you'll be in the side of the screen where u looked that u were.
That's sound a little confusing, and I don't think is really that practical, but it was the best I could find till now