I have these pants in the Khaki/Black color (not that color matters) and they're awesome. Light weight, tough, comfortable. Total freedom of movement without a sloppy fit. It's great these are on amazon prime now. When I got mine, I had to wait weeks for them to be shipped from a warehouse in the UK. Hopefully amazon.com gets the other colors too.
The glue on the water proof cell phone bag is a little sloppy, and according to reviews on the Bear Grylls site, it can make a mess on hot days. (I took it out of the pants when I got them.) You can pick up another small WP bag at any outdoor store... or just put your phone in your pack. (I recommend just putting it in your pack.) Point is, these pants are great even without the bag.
Sizing is accurate, but a tiny little bit on the small side. If you have overly thick legs or you just like your clothes looser, order one size larger than what you nomally buy. I have muscular legs, and normally wear 32x32 to 34x32. I got the 34 reg and they fit well.