Maia B.wrote a review of Black Diamond Guide Finger Mitten on February 9, 2017
Familiarity: I've used it several times
I bought these because I liked my BD Virago mittens for their durability and waterproofing; but they are only midweight and I had nothing truly warm for the New England backcountry.
While ski touring in 0F and below temps, when my hands got cold, I just popped these babies over some merino liner gloves and within a few minutes my fingers were back in business, no handwarmers needed. I didn't even have to take them off to transition my splitboard from ski mode to ride mode thanks to the dexerity---good thing too, because 60mph winds are no joke!
As far as I'm concerned these are the king of gloves. Super durable and comfortable; great powder skirt; clips to clip them together as well as loops on the ends to clip onto a biner; completely waterproof; pretty good dexterity; and great warmth.
They do seem to run small. I got them in the same size as my Virago mittens, which are very roomy and accommodate a thick liner glove, but found these gloves felt a whole size smaller. I would consider going up a size if you want to wear thick liners. They will accommodate thin liners (and pack out a little after some use) regardless.
Love these gloves!