I always drive with it on unless there's snow on the ground and I'm turning out onto a main road and need to get going quickly.

I've never launched the car on pavement, but a few times I've been side-by-side with another subi at a light and we will do a 1-3rd gear, and tractional control will come on when I go from 1st to 2nd every time and 2nd to 3rd sometimes. I now make sure I shut it off when I'm cruising with a group on a double lane road with traffic lights.....also, must be school zone in sight or no traction control light.