The DWR treatment is part of making the water-proof-breathable thing work, it makes the water bead up.
it breaks down over time and needs re applying.
DWR IS the opposite of the wetting agents in detergents that make the water spread out ..
whole outside of the coat wet, and its as likely to soak thru the pores left for breathability ,as it is to clog them and so not breathe much at all ..
Over $50 but a really rugged PVC welded seam Cape , made by a company that makes off shore foul weather gear for the commercial fishing industry,
Grunden's Bike Poncho
I got one of these a few winters back where I live on the Coast Marine Squalls come ashore an dump a lot of rain at once ,
and It let my hands and the rest of me arrive home pretty dry . wet hands were always a problem with jackets ..
as only a dipped rubber glove wont leak . and sewn seams always will ..