i had it on but mine isnt very intrusive like some peoples, it didnt really come on, also did spa with it on and again, didnt really hamper me too much, light never came on.
when i was at brands and drove the 225 the esp was on and the instructor told me it was fine and that if it came on i was pushing too hard so to try and drive with it on but without it activating.
Then I have driven mine at brands with it off both times so I cant really make my mind up, it certainly doesnt bother me with it on though, i dont hang around.
If I had Toms I would keep it off.