I like what Mike & Fred have pointed to above.
The waterproof layer with the wool or fleece fingertip-less glove as a top layer seem to be growing in popularity with cold weather guys. I have been wearing the same 2 pair of Woolrich fingertip-less gloves since they were still making them in Woolrich Pennsylvania. They last forever (obviously) and they get me by. When it is too cold for them to offer any comfort it is also usually cold enough that the icing of the rod and line put a stop to the festivities anyway..........
It's really more about how you hold your mouth. Some have tried to tell me that the tongue position is what catches fish or completes a good cast but I tried it and went back to general mouth positioning