Winter riding on the fazer

[Frosties]

I have a pair of Ixon winter gloves which certainly are very warm without being too thick and bulky, but the liners have a tendency to want to pull inside out if I don't remove them carefully, so I got myself a pair of Spada Enforcers, which don't have that problem. A bit thicker than the Ixons, but very good gloves. I can't comment on the waterproof-ness of either pair as I tend not to ride much in the rain. Added to the heated grips, no cold-hand problems thus far though.
Interestingly, a lot of heated grip owners seem to complain that the left grip (specifically) does not work as well as the right (same with mine) - anybody know why this is?

The left grip is straight onto a cold steel tube whilst the throttle side has a plastic inner so the grip can move. When i fitted them to my Tiger I wrapped some insulation tape to the left bar first - worked, equal heat!