I am a regular (yearly) to the backcountry in Alaska. I have used various forms of rain gear, including gortex, and last year I bought Integral Designs eVent jacket and pants, and loved them. They were worn over a set of smartwool long underwear, as my main climbing clothing. I had to be careful not to tear the fabric, but it was very rainproof and breathable. My question is this.....every year the guide I go with invariably recommends that I bring Helly Henson Impertech raingear, which is a rubberized fabric, and several of these guides have seen gortex garments fail in Alaska's harsh environment. Is this true of all gortex, or was true in the past. I really like my current gear, and don't want to carry the weight of the Helly Hanson stuff.