In reply to BnB:
> My concern for now would be over durability and for that, time will tell.
Yes, I've snagged the inside scrim netting in (I think) a zip on a rucksack, making a hole in it. I don't know if the membrane is damaged too but there seems a good chance. Fortunately the damaged bit is on the inside of the hem, so not a spot vital to the jacket's breathability or waterproofness. I will probably just paint some seam sealer on to stop it getting an worse.
But I suspect this happened a) because I was clumsy or careless stuffing it into my pack but also b) because the grade of neoshell is so soft.
Of course if I used the little stuff sack it came with this would never have happened but I've found that a bit fiddly for real 'on the hill' use.
Very interested by your "waterproof windshirt" idea. Do you mean because its breathable and not completely windproof?