Maybe they don't work because of sweating, but I haven't seen anyone suggest latex gloves first under the regular gloves. I would think they would do a pretty good job of blocking the wind that are hitting your hands and possibly blowing through any gloves. That would allow a little lighter glove to keep more dexterity in the hands. But, I don't know, I don't yet have experience in riding in the cold. I hope to here in the coming months because I plan to continue riding until the snow flies.
I have some winter Mechanix gloves that I use when clearing the driveway with the snowblower. That is what I plan on using when it starts to get too cold. I'll probably wear some latex disposable gloves under them for the wind protection since the Mechanix gloves I already know won't hold back wind penetration.