For those of you asking for a study of winter clothing, and yes, you know who you are, I have found one, courtesy of Pyreneo, a member of wintertrekking, so credit goes to him for the find. The first link is to an outdoor blogger who has written about this subject, the second is a study.
http://woodtrekker.blogspot.com/2011_12_01_archive.htmlhttp://www.jfbi.org/admin/Issue/Proceedings%20of%20TBIS%202010_2010927112115_paper.pdfThe study doesn't address the big issue of whether Goretex works in subzero weather, but there is enough anecdotal evidence to support that proposition.