I have not looked into that, but finally did get the glove thing figured out this winter. I bought some Pearl Izumi Inferno gloves(not cheap, but worth it IMO) and they work great. Then on really cold days(single digit temps and below - MN) I slip some real thin glove liners that I bought at REI into the Inferno's. I'm good down to 0 degrees F or so.

The nice thing about the Inferno's is that they have a pocket for the 4th and pinky fingers, but the middle, index and thumb have their own so finger use for shifting is fine.