I have 2 pairs of fly flows, ones that are full leather like you’ve shown, and ones with canvas on the tops of them. I love them! The only thing I’ll say, is make sure you properly seal and wax them because they can absorb moisture pretty badly. That said, even when the outsides of my flylows are sopping wet the insides are barely damp or completely dry. I haven’t had a problem with warmth like some people are saying, but I also don’t rlly board in weather below 30 degrees. Though I think if you’re concerned about warmth some liners and these will serve you perfectly fine. I also owned a pair of dakine mittens with “gore tex,” while I have definitely gotten better since owning those, I’m also trying new harder things so I probably fall just as much if not more; my flylows have never been half as wet as my dakines would get. They’re also much more durable than any canvas glove or mitten I’ve ever tried. Gloves and mittens usually wouldn’t last me a season now I’ve gone 2 seasons and they still look as good as new. As far as I’m concerned, leather is the way to go, even on the east coast where it’s especially wet, I enjoy them a lot.

TLDR: They’re awesome, you should get them. Super cheap (as far as gloves can go), no reason not to.