I gave up on winter gloves and overmitts when I got Hippo Hands. The ones I got fit over handlebars even with barkbusters, and they're rugged, waterproof, warm and improve the cool-overland-adventurer factor of your bike many times over.
Previously I had winter gloves, which were not very warm, and overmitts which I bought for a ridiculous sum from Tourtech but which leaked and started yielding to entropic processes almost immediately (i.e., bits started tearing and falling off). Then I tried an off-brand knockoff of the Hippo Hands out of a snowmobiling catalog, but they didn't fit and weren't well made. You get what you pay for, and the Hippo Hands brand is the real thing. Now I use summer gloves, which are quite comfortable compared to big bulky mitts and gloves, year 'round.
I've never had heated grips. Every time I get tempted, I meet someone who raves about his heated grips....which just happen not to be working at the moment due to a bad connector or shorted wiring or some damn thing. So I stick with the passive, non-electric solution.
Hope that helps.
Last edited by markharf; 22 Oct 2010 at 02:30.
Reason: Oddly enough, I confused brand names while shouting out how superior one brand (the wrong one) was