I've never found gloves that are thin enough to use for RC flying, yet thick enough to provide any warmth. I use fingerless gloves or "cutoff" gloves in the wintertime. They keep the main part of my hands warm, and I just fly until my fingertips start to get numb! I'll wear some warm wool or mechanics gloves when I'm not flying & to prep the plane, then switch to the fingerless gloves to fly.

I made a transmitter "mitt" that covers my hands and the transmitter, but never did use it much. It needed to be a bit little larger than I originally made it, and it was a pain to get on and off the transmitter. There are a few people that make these TX mitts and sell them on the internet, if you want to give one a try.