I just took my first ride yesterday (~37°F) with the Oxford heated grips on my '05 ST1300...and...I'm disappointed.
No problem with the Oxfords. They heated up nice and toasty. Plenty of heat to keep my palms warm. Unfortunately I noticed that I never have any finger but my pointer on the grips. The other three fingers ride on top of the clutch or brake levers. I do all the pulling with my middle and ring fingers and the pinky just hangs out there doing nothing.
When I'm riding in temps below about 5°F, it is just my fingers which cause problems. I'm fine above 10°F with just Klim snowmobile gloves and unheated liners. From 10°F to 5°F fingers get uncomfortable during my 30 minute commute but it's manageable. Under 5°F I need something but heated grips aren't going to do what I need with six fingers flying in the breeze.
Heated grips aren't for me, apparently.
I'll go back to the heated glove liners for under 10°F but I really don't like being plugged into the bike or messing with the wires. My other thought is to get some Li-ion battery powered heated gloves and put up with having to remember to recharge them between use.
Later,
Kent Larson in Minnesota