Just got back from a loop around Blue Diamond in NV. It was GREAT!! This setup works even better than I thought it would. Shifting onto the 42t was perfect, shifting off if it was a little slow, but doable...
I had no issues with mis shifts, or chain suck. The gearing of the 32-42 is about as perfect as it could be. I had plenty of granny gear.
All in all, I am 99.5% satisfied!!