"Zorlac - I just plain can not turn the heat up all the way on my Gerbing glove liners. I literally had mild burns from the time that I tried it and thought I was just imagining that I had hot spots on my hands."
Maybe so for the liners, but the actual Thinsulate insulated gloves don't get hot enough for me.
I made electric glove liners and a homebrew controller that worked like your liners.
I think the pot should be adjustable from off to painful so that at 10 degrees, when my fingers are cold from not wearing the gloves for a few minutes and the gloves themselves have cooled off, I can put them on, crank it up, thaw out my digits, back off on the heat and ride.
JMHO.