I have the RST heated paragon 2260's. I also ride with a heated best (generic from Amazon).
I paid a lot for the gloves, but they're well worth it. 3 heat settings, and down to 2C the lowest setting it good enough to stave off wind chill.
Gloves are powered by batteries in the cuff of each glove, vest by USB power pack that slots into a pocket in the vest. Means that should the worst happen, I'm not attached to the bike. But does mean everything needs charging (as does the PacTalk Bold and my helmet cam).