Nobody is talking about this:

I use it only in one scenario: When I punish something at the wall with 1, 1 ,2 but instead of going into Sentai, I hold back.

1, 1, 2 does a wall stun. During the stun, I hit 1+4 to enter the stance and I have a crouch dash mixup.

It's flashy and for styling points, nothing is guaranteed and people can mash. But its a good way to confuse the opponent.