It's something I've never considered, and makes me happier I went with silnylon supermid over a cf one. I've only got into the winter camping thing in the last three years, but one thing I've decided is taking a dump in a blizard sucks. As soon as you drop your pants, spindrift hits your backside and melts, which causes more to stick and melt, meanwhile you've taken your gloves off because getting shit on your gloves would be awkward and you need the dexterity to use TP effectively. However now your hands are wet from spindrift, and just like your ass, more spindrift is now sticking, so the TP gets wet and hard to use, after a short time your hands go numb. Why wasn't it a 50 second job? Well, because you don't normally eat a such a high fat diet, with all that salami, dark chocolate, re-hydrated food , the pipes aren't flowing the best. Add to that you don't have a spare pair of underwear, you're out here for 4 days, and its a 6 hour drive back in a full car before you can make it to running water, you're keen on doing a good job. Yip, after that I bought a mid with enough room that I could sleep, eat, and take a dump, without ever leaving.