Opt for the Creek-designed pogie mitts- they're earier to get your hands in and out of and are plenty warm. Wildwasser makes a good pair with an cuff that stays open & snaps to keep it on the paddle.
As for creeking, I agree with TK2- you have to be able to pull yourself off a rock and not have your fingers freeze in a rescue. They'll be colder in general, but you have to have the mobility. I use an NRS glove with a synthetic leather palm and neoprene back. Cold, but the palm is thin enough to "feel" the paddle shaft.
The final option I've seen used for those who can't stand pogies is a thermoliner glove + latex dishwashing glove combo. My buddy used this setup for dead-of-winter boating- it keeps your hands dry, and the latex gloves are sticky enough to keep your grip solid. Just keep replacing the dw gloves and tuck them inside the latex gaskets of your drytop. Totally effective if your boating while it's snowing, and you're careful not to rip the gloves. Downside: Goofy as Hell.