Black Diamond Couloir Harness

Anyone uses this as their mountaineering and alpine harness? The spec looks good, weights only 8 oz.

Yep, it is super light and small. Great harness w/ a belay loop and clipper slots. Price is decent too. I don't use it for rock though.

I use it.

Best alpine/mountaineering harness ever in my opinion.

Light weight
Full strength belay loops front AND back
Ice clipper slots
gear racking loops
Comfortable
Drop seat

My only complaint is the two piece buckle is hard to thread while wearing gloves. Otherwise it's pretty much perfect.

I'd echo Scott and Kai. I'm really glad I picked one up. The packability is the biggest advantage from my standpoint. They pack up so small that they're great for those trips when you don't really have space to pack a harness if one isn't necessary but you're not sure whether or not one will be necessary.

I would point out that the rise is a bit short, though. I'm a Petzl guy as far as harnesses go and I haven't used another BD harness so the sizing may be in line with all their harnesses. But, I had to go one size up so that the belt would sit on top of my hip bones. It's not that big a deal as the size up still works when I cinch it down all the way and, with a lot of layers, it'll be fine. If you're tall and skinny, you may have a similar experience.