I have always wondered why the Goretex layer is usually next to the skin leaving the insulation free to sponge up water? This simply sets up an evaporative cooler that the heating element slowly looses ground to.
If your gloves pass the " bucket test" without gaining water weight you have a winner. I have seen waterproof boot tests where the boots are tested for leakproofness and how much weight is retained from absorbed water. Some have abysmal results even though feet stay dry.