Skied out west with these and they were great. Had a few warm days out on the mountain and pulled out the removable liner (Velcro attached for easy removal) and wore them with thin glove liners. When the cold water hit, kept my hands warm and dry. When my hands did heat up and got sweaty, I would take the mitts off and they dried quickly (while waiting on the lift line).
The palm is leather and according to the instructions, needs to be treated, but I had no problems with it so far.
The elastic wrist straps that attach to the cords are comfortable and I prefer them to regular wrist straps. They also feel more secure then regular elastic cords.
This is my first pair of mittens (have been wearing gloves for years) and I am not going back.