I bought a pair after a run up to the lakes on a sunny but -1c day in Feb.
I took my normal thin leather GS logoed gloves and a thick winter pair.I found that the winter gloves still let a bit of cold through the top but insulated the palms so much I couldn`t feel the bennefit of my heated grips.I ended up wearing the thinner gloves although having no insulation I could at least feel the heated grips and so the net result was warmer hands.
The comfort gloves are ideal,they contain plenty of insulation to keep the cold out but also the gel inside absorbs the heat from the grips and conducts it all around your mitts and keeps them nice and warm.
Well worth the cash,the only down side is a slight lack of feel,but still less restrictive than most winter gloves.
Inspired by the gloves I also got the PCM under jacket which works very well with a heated waistcoat.
Best wishes
Jon