I've tried mine on all settings, mainly to try and improve the low revs issues I am still getting sometimes, but not noticed any real difference one way or another. The only time I've seen the red light on in anger was while riding on some very freshly laid black top a few days ago, which didn't have much grip at all! Otherwise, the handling, the grip, the tyres, the brakes are all really, really good, and inspire great confidence in the bike. I really am impressed and the more I ride it, the better I like it.
Apart from this dreadful low rev nonsense, which is still there I'm sorry to say. Will have another go at sorting it when I get back to the UK, but I am getting really cheesed off with it now!