Good point you've raised here, it's something 99% of people just won't know but as some people have already said, heated grips and any waterproof gloves don't mix. Even Gore-Tex. The problem is I believe called osmosis (sorry if I'm wrong) and it's where the water can transfer through waterproof membranes and in essence, reform as water again on the inside of your hands, the heated grips almost force the water to come through your gloves and make your hands wet.
There is a pair of gloves which Revit have made that stop this from happening (providing you're not in the worst of worst conditions), see link below:
https://www.motocentral.co.uk/revit-gloves-fusion-gore-tex-black.html
There is a pair of gloves which Revit have made that stop this from happening (providing you're not in the worst of worst conditions), see link below:
https://www.motocentral.co.uk/revit-gloves-fusion-gore-tex-black.html