Yes, I do leave it on. I was experimenting with PSM on and off that first day. Then I added my results to discussion with other owners who had recent models. Older forms of traction control (and probably the current ones from other mfrs) are nothing like PSM. This is more like the stuff we put on fighter aircraft, several of which could not fly -- literally crashed -- if their flight control computer crashed in a software sense. First one I remember was the F-16 and you never saw a whole squadron of engineers go into overdrive so fast.
Incidentally, meant to give you my e-mail address:
simsgw@cs.stanford.edu, because these guest messages are so darned short by design.
Let me think about the question of whether you can learn the true art with all this stuff turned off. The answer isn't obvious. I need some consideration of that.
Gary