I'm in the process of reviewing the new gaiters from Stone Glacier and I have enough time with them I can start to form an opinion and comment on them.
Product Link: https://www.stoneglacier.com/products/sq2-alpine-gaiter
Initial Impressions:
-they hug your boot very tight with little room for debris or water to get in from below
-the adjustability of the dyneema cord vs the standard strap/buckle design is an improvement
-the calf buckle is sweet, I've yet to have it come undone allowing the gaiters to slip down my leg
-breathability seems better than others I've used, my feet don't overheat as often
-initial concerns about the contour calf hook & loop were unfounded, it's been sweet having the ability to fit no matter layering
-the idea of keeping the excess strap tucked in is nice but doesn't work through brush, frankly not worth the time fiddling with trying to stuff it away
If you have any questions, post em up!
Myself and another guide were running the SQ2 gaiters with very similar results. Just as waterproof, more breathable, they don’t ride down and the replacement stirrup is awesome to be able to repair in the field. He had one stirrup fail but it had lasted longer than other models before it finally did. 
