if you can get some bark busters or something you will fair better. otherwise even with those you may find your fingertips cold. problem with grips is they don't heat the outside of your hand which is the place all the col air is hitting.
they also don't heat your fingers when you're at a red light and your fingers are on the clutch and on the brake.
His points are valid, but...
Barkbusters won't heat cold hands, ever.
Grips are always on your bike, spring summer fall, unlike heated gloves which tend to accompany you twice a year.
95% of the time, you'll wonder what you did without them, 5% of the time you finger tips will be cold as hell.
One day I will buy heated gloves, until then my heated grips and Ascerbis hand guards will suffice.