For long rides in cold and wet conditions I use a thin polypropylene glove liner with a medium-thickness Merino wool underglove under a pair of Pearl Izumi AmFib gloves that I then spray with a water repellent like Tectron DWR before each day's ride. The polypropylene liner wicks away any moisture that gets in and the wool underglove retains the heat even when moist, and even though the AmFib gloves are quite good at repelling water, they are not completely water proof of course, so I apply the Tectron each time as a final step and this seems to work quite well for me. I've used this same solution for years and I am very satified that short of coating my gloves Plasti-Dip, I can do no better.