Chicago Region BMW Motorcycle Owners Assoccrbmw

I am thinking of getting the Gerbing Heated Gloves. Does anyone have any information regarding how well they work and which styles work best? I know they are not cheap and any feedback to substantiate my investment would be appreciated. Yes I have heated grips but he backs of the hands do tend to get cold in lower temps. I was wondering if I should just get the glove or the liner. I think the liner would tend to be a bit bulky under the riding glove.