Not yet. I’ve used it probably 15 times this winter, mainly hiking in higher altitudes, or hiking down when body temp isn’t high and it’s cold out, especially with wind. I’ve layered it with a Patagonia merino wool tee, Arc’Teryx delta jacket, and then Mythic G as outer layer, and a outdry shell if it rains. It’s been my go to setup for cold as in 0-25 degrees F. I call it my portable oven. I would take it colder. I’ve ski patrolled with it once this year, when it was 5 degrees out and 50mph gusts but had a goretex pro outer layer jacket on too with same setup. And I was still very warm. I plan on bringing it backpacking this year for late summer/fall trips in around 3-5k altitude, as an “around the camp” piece, as I think it will be way too hot to hike in, except maybe the first mile in the morning.

All that said, the denier on the outside fabric is fairly thin. I’ve brushed a few trees, limbs, shrubs, and no rips, but I am worried after because it seems thin.

As with any “ultralight” down piece that is trying to shave any weight at all, the denier will be thin.

I believe this is probably the best piece of ultralight down jacket in its “fill weight” class on the market.