^^ This, with the emphasis on the liners. They need not be skiing-specific, as long as they are thin. I get mine at end of season close-outs at big box discount stores. The trick is to NEVER TAKE THEM OFF while you are outside. If you need to text, find a pair that is touch-screen-compatible. (Note: I do not have Raynaud’s but simply deal with a wildly cold climate and ski mountain.)
I rode chairlift with a lady who had Astis mittens, and I asked about them. She said they were warm, but she was way disappointed in how they were wearing - that the cowhide leather got very soiled, and quickly. She said she wouldn’t spent that kind of money again on a mitt that looked like this in less than half a season.
I have a similar beef with Hestra, who makes many models with WHITE palms, and in “goat skin leather,” no less. Well, that’s not only going to be high maintenance for material, the leather is going to show soil - FAST. Why white? So you’re all the more aware of how old and crummy your gloves look? Pass, especially with that price tag.
It’s really more about the layering and trapping air than it is the specific brand of mitten. I’ve done fine with mittens that are <$30, liners that are .25/pair.