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Ok, mental. I guess you can end up not really knowing how much the bike is doing to sort stuff out. It seems like a good thing to have on paper but I'm not sure I'd want to trust it. I guess you can switch to a setting that gives you a little bit more feel for where the natural limits are. Dynamic sounds like a good setting. I love going sideways with the front wheel off the ground :)
No, the traction control completely failed both on original corner entry and on subsequent input adjustment to modulate the power to the rear wheel, causing megaskidz both on the bike and in my trousers.