There have been some fine responses so far. I'm less concerned with getting soaked (it's my job to prevent that), but I can't regulate the humidity I generate myself as easily. I've read reports of down slowly losing its effectiveness in longer winter trips because it gradually absorbs more and more body moisture in a week or more of use. The new treated down may help with that. I'd like to hear reports from testers under those conditions, but it may be a while before we get enough to conclude anything.