Personally, I almost never use it, mostly because it takes forever to set up and it’s not free ANYTHING. In the time that you could’ve been dashing in to start wakeup/mixup, or charging meter or something, instead you end up on the other side of the screen and semi-invisible. Yay.
The problem is that unless your opponent is a complete scrub, they can just wait it out without much of a problem. Toss a fireball, turtle up, whatever. You might get a throw out of it, yay. But if they watch the screen move, they can probably guess where you are. And if you air-dash, they will hear you.
It’s just not worth it for me. There’s a billion other things you could be doing that will actually benefit you. No reason to waste time with it.
N - Unless you have a secret plan to Instant SA2 him in the face. That would be Top Tier.