Interesting. That is the part of my hands that gets cold with heated grips. Makes sense. Cheers Mark.I own both - I wouldn't be without the heated grips. With the hand guards and heated grips my hands are usually fine, only in abnormally cold weather would the heated gloves be needed.
My heated gloves have heating elements running down the back of the hand/fingers, clearly designed to work with heated grips - IMO. They are bulky and not anywhere near as comfortable as my normal winter gloves, I'd prefer not to use them unless I really had to.