I'm thinking of buying a set of the Gerbings insoles. I have heated gloves and the rest of my gear keeps my body warm enough... But once it drops below freezing or so, my feet can only take about 45 minutes before they're cold enough that I've got to pull over to warm them up. I'm debating between getting heated socks or heated insoles. I'd much rather get the insoles for the convenience factor, though I'm sure the socks would keep me warmer. Does anyone here have any experience with the insoles? Good? Bad?