I just installed a set of 2x10 Sram xo grip shift and they're great. Smooth and precise shifting and you can downshift thru all of your gears in one swoop. I thought it would take a bit to get used to them but after one ride, I don't even notice that they are on the bike. I have them on 680mm bars and have more than enough room. I highly recommend!
I have the 2x10 XO set on my Trance X. I've always preferred
grip shift. When I got my new Trance about 2 months ago
I had a right thumb injury from a motorcycle crash. It was
real painful with the stock shifters so I made the switch.