I can't stand to wear any type of glove when fishing. Since it is not hands but my fingers that get cold, those fingerless gloves are counter productive for me.
If the fingers get so cold that they start to hurt, I do a couple of different things. A couple of them you will laugh at but it really works quickly and that is what I am after.
Depending on the type of fishing I am doing and how I am dressed, one option I use is to run my hands up under my shirt into my armpits. Press your arms against them and they will warm quickly. If I have waders on, I will run them down my pants. Laugh all you want the area between your thighs is very warm and in about 1 minute my hands are as warm as they can be and ready to go again.
Ok, let the jokes, sneers and jeers fly. I can take cause I got warm hands!