I used these pants on a recent multi day trip. Though I didn't hike in them--no need, really, as I prefer upper layers to keep me warm when hiking and running--they were a welcome layer in camp. I used them a couple of time over shorts against mosquitoes, and over long johns in the cold mornings. Especially in the summer (and even at 11,000 feet) they were the atomic bomb of insulation, along with my rain jacket. They pack small, and appear to be pretty water proof (I never used them in the rain).
This review was written in the old system and had content requirements that are different than reviews written today.