Gamma MX Pants for very cold and windy weather?

I just managed to get a pair at a great price. Unfortunately a little too warm in my area to do a good evaluation. Appreciate it if anyone can share their experience using these in winter for hiking, backpacking and ski tours.

I don't have much to compare them too but I use these above treeline w/o long underware down to about zero, maybe 40mph wind. Anything more extreme I put some Precip pants over them or some Primaloft belay pants.
They hold up pretty well to bushwacking too.

Hi Lloyd,

Thanks very much for the feedback. I have heard such different reports about them. A climber friend says they are good for him to 30F without wind without wearing long underwear, down to 10F with a thin baselayer (again without wind). I know people can have very different metabolism and run "hot" or "cold," but a difference of 30F between 2 people is a lot. I'd like to hear from more people who have used them if you are out there.

I love the fit and think they'll work very well for me for ski touring, hiking and snowshoeing in very windy conditions (I have Ibex Guidelite pants – merino/cordura/spandex softshell pants – and these with a thin merino baselayer are great for X country skiing, ski touring and winter hiking, except in very windy weather. I think the Gamma MX should have a wider usage range because of their wind resistance. The Guidelite Pant's breathabilty is its downfall in highly windy conditions, where it can lose quite a bit of heat (a lesson I learned in the High Peaks Region of the Adirondaks this winter in -5F with a windchill down to -25 to -30F.

I picked up a pair in the beginning of the winter season and they've been fantastic. I've been wearing Smartwool Midweight bottoms with them and I've been fine down to -15 as long as I'm moving. Over 40 and I'll start to feel the heat, but I'm pretty amazed at the wide temperature range I was able to feel comfortable in. That setup moves moisture like you wouldn't believe. And the wind has to blow pretty hard (30mph+) before it will cut through.

I didn't have much luck bushwhacking though. Tore a big hole in the thigh on a low branch that I didn't even feel. The good news is that I haven't repaired it yet and over several more trips it hasn't gotten any bigger. The fabric does not seem to be as tough as what is on my Gamma SV jacket, which is, apparently, impervious to pretty much everything.

Anyways, I liked the pants so much I just picked up the Gamma MX hoody (on sale, unfortunately I won't get to use it much until next winter).