Water proof when the water is Snow, is a Low Bar to get over ... you just sweat, More than the breathable pores will let Pass .

and once the DWR Treatment wears off , the water from the outside will seep Thru rather than Bead Up .

I put on my Waterproof Rain Cape, when its Pouring out . Over My Jacket that is a decent wind break when its Just Cold , But Dry to misty out..

and I now neither go Far, Or Fast. since Home location is near to my Usual haunts.