Large size weighs 5.2 oz. Feels and looks like a wind shirt.
Darth Vader breathe-in test, 15-17 seconds till lungs full. (I get >30 seconds on my Frogg Toggs, and they are often referred to as 'very breathable'.) I wonder if this could pass as another Faux-dini. Especially as the DWR wears off--I'm assuming DWR, but I still haven't a clue as to what "Hydrö Repel" is. The illustration that comes with the jacket shows a two-layer fabric, or a two-layer SOMEthing, but who knows; still assuming an applied treatment of some sort.
Looks like a fine rip-stop poly. No draw cord at hem. Elastic cuffs do not close all the way down to the wrists. Most seams have over-locked stitching (except inside pockets.) Pockets are large. Hood is large, fits over a climbing helmet. Cut low, fully covers pelvis. No remarkable or obvious faults I can spot. Made in Viet Nam. Had the wife give the jacket the once-over, and she proclaimed the stitching to be of good quality.
Sizing probably accurate, I purchased a size larger than normal (40" = M, upsized to L) so it would fit over a puffy without compressing it, which it does, nearly perfectly. Without the puffy, and just a tee shirt underneath, the L fits a little large, as expected.
No chance to water-test yet, will report back when I've a chance.