I cannot offer any direct insights on this material as I don't own a piece yet. However, I have been researching it intensively of late and it does seem like a better mousetrap. From all accounts it is durably waterproof and breathes significantly better than the standard WPB fabrics. Polartech is coming out with a lighter material with the same membrane in 2013 and will be seen in the RAB Myriad shell, among others. It still won't be superlight, but given the apparent improvement in breathability over the hard shells, I may be pulling the trigger. Also, Neoshell won a guide's choice award from American Alpine Institute. I believe their evaluations have more credibility than some others, and thus I became even more curious about the fabric. Good luck with your search.