While I'm reasonably happy with my OR branded light jacket, it's definitely a great windshirt, but does wet-out faster than I prefer, especially at the shoulders after I've backpacked with it some (regardless of re-treating with the appropriate stuff).

I'm getting tempted by the extra long version of the Zpacks cuben jacket: http://www.zpacks.com/accessories/wpb_jacket.shtml

Would be nice to hear about long-term durability from anyone who uses this on a reasonably long distance hike, particularly shoulder-area under pack straps, and how well the zipper(s) hold(s) up.