I have the hook up for the Widder electric vest and gloves. I used them all last winter and some this year already. I have NO PROBLEMS at all. That hook up was the first thing I did to my bike when I got it home to my garage!!!!
I have heated grips and highly recommend them. And I live in Australia! The next best thing would be some handguards BMW style to keep the wind of the front of your hands. I prefer slimmer gloves so that is the trade off for me.
I went for years without them because I was diamond hard. I guess now I am tissue soft ;D but warm >