SloppyPoppyyThe MVTR is only: 15,000 g/m²/ 24 hrs) where as Pertex shield Plus (although zero air permeability) has a MVTR of 25,000. The pit zips will help a lot, though. Even Better would be Marmots Nano Pro Membrain at 20,000 to 47000 with an air permeability of .2 CFM. Event is only .1 CFM. Pt zips is a must to help manage internal moisture.
AtmakoYou will want to check out their web page. You might also inquire to them about improvements in the potential of delamination. I heard occasional reports about delam but have heard that about other membranes also. Also prepare for the C6 DWR to fail as technology has not yet been able to overcome that challenge with good MVTR and Air permeability. DWR re-treating is somewhat of an accept standard at this point, technologically speaking. As more is spent on R&D, you will see better future solutions, although I do not know when. There are some permanent DWR's but they are better used in colder conditions as they do not vent well so designs are incorporating pit zips. Nextec Epic fabrics have their place also but are fouled by body oils so need more frequent washings.