Originally Posted by
Torrilin
I haven't experimented yet, but they're [Fingerless gloves] also supposedly helpful as a layer in very low temperatures. Think below -20 or -30C. Use them over or under a regular pair of gloves to get more insulation where it counts. (course, if it's *that* cold, I'll probably be cowering inside with my teapot

)
I do have experience at riding at -20°C, and the fingertips feel the cold first and are far more sensitive to cold than the rest of the hand. Wearing fingerless gloves as an insulation layer over or under mittens/winter gloves makes as much sense as wearing crotchless long johns in cold weather.