Actually, the exterior waterproofing is only as good as the balm you rub in. Some have a Goretex liner, which isn't bad, but it's thin and gets torn easily. You might want to reconcile that issue on your chart.
Honestly, leather gloves are all about climate. If you ski someplace where it's cold and dry, they'd be fine, but wetter climates with heavier snow and more frequent rain suck. I used Hestras for years in the PNW, and eventually gave them up because of the exact thing you're asking about: they're a bitch to dry with no integrated liner.
I'm personally a big believer in the Outdoor Research Mt. Baker mitt. Goretex shell with fast drying, removeable liners. Way more functional, and way more waterproof. Had a pair for five years, then got new ones and they're the best hand protection going for cold and wet.