randomboulder wrote a review of prAna Stretch Zion Pant - Men's on June 21, 2012
I love these so much that I bought two pairs plus the convertible version. Most comfortable pant I own and great for climbing and hiking or anything else really. An understated feature about the Zion pants is the 3M coating that is applied to the fabric that really helps keep stains off. I've spilled soup and other stuff on myself and it just beads off, pretty amazing.
A few differences between the convertible pants and regular stretch Zion Pants:
The convertible pants have two zip cargo pockets, while the regular pants only have one. Also, the convertible pants are much baggier than the regular version, I'm not sure why this is, I kind of like the fit of the regular pants better.
The final thing is that I noticed a few comments about the inseam being pretty long. This is true, but an easy fix since there is no zipper at the ankle, you can just bring them to a place to have them hemmed to the correct length. You can't do that if there is a zipper at the bottom of the pant leg.