I finally have it in hand and some initial impressions- fit is on the athletic side, so keep that in mind if ordering; the tail (rear) is longer than the front- that's a nice touch!, easy to use adjustable shock cord hem, nice roomy napoleon pocket, hood is adjustable and well fitting
it's not overly breathable- most of my windshirts are in the 20-30-ish cfm range, this is in the 5-10-ish range (guessing)- I don't think this is all bad though- it's going to be more wind resistant than other windshirts and I'm usually moving much slower hunting than I am hiking/skiing/etc
looking into Gore Windstopper, it appears to be very (very) water resistant, possibly even meeting the 10,000 hydrostatic head benchmark needed for waterproof
our (Montana) fall moisture is usually light and if not light, usually short in duration- I think I'll be able to completely ditch my hardshell in lieu of this garment- we're expecting a bit of moisture in the next couple of days so I hope to test this out