@Sly - Yeah, Well...can't say habit but I usually do it when they are stunned. Such as 3P+K > [6]PKH for an opening window. I use alot of KH as well but mostly the cancels I do them in a stun. I especially do them if I go risky and after they hold they'll block and I just go straight for a GBoD. I mean, it depends really. Sometimes i don't at all.
@DestructionBomb, I notice you do PKH a lot. Why? You can only follow that P up with a high K. Only time that's useful is against a wall where your opponent knows you're going for the knockback. Is it just a habit you got yourself into?
In terms of teching up. All you have to do is hold 4 and spam the hold button before you hit the ground. It will literally get you out of every single pseudo option.
@Samurai - It's best to always go for the 2H+KP. Especially if it's near a wall for that free wall splat and good damage. I only really go for 4PP+K because I worry I may drop the 2H+KP from the online lag. The move is not really a guaranteed tech, they have to get up at the right time to tech.