I have never tried mittens and that appears to be the warmest option. If you look at extreme cold weather gear, it almost always involves mittens. In a hunting situation, mittens seem impractical to me but the fold-back mittens may be the solution. I have never tried them. Magnetic holders could be a problem for backpack hunting using a compass but if you are aware of it, you could work around it.
The Kinco Alyeska rag wool gloves come with a fold back mitten style called Alyeska Ragg Wool Pocket Glove. They have the PVC dots and a magnetic holdback and are less than $20 online. I think I will order a pair to check out.
The Marmut Exum Guide Gloves have great reviews but are hard to find in XXL. It seems like they may be discontinued or this is the wrong time of the year.
