"They'll be my go to rain/snow pants this winter."
@Eugene - I used Tyvek overboots as camp shoes over goosefeet with some disposable hotel slippers inside recently, which worked ok, but...the snow had a tendency to stick to the tyvek. It was strange. For lack of a better analogy, it was as if the snow was statically charged, but then stuck like velcro. The more worn the tyvek got, the worse it became. After 2 nights, they were toast. Moisture content was moderate to low (~12:1) camped at 13,000'