The whole idea for the sock "liner" is to ensure that moisture is wicked away from your feet to keep them dry as possible. One thing for sure , if you trek any kind of distance and have wet feet, you are going to have a real problem with blisters, and blisters are no fun in the backcountry. I have in the past, taken some extra precautions as far as keeping my feet dry. Usually a couple of days before I leave, I start rubbing isopropol alcohol all over my feet. This keeps them nice and dry and the day before I leave I may even rub them down real good with deoderant of some kind, usually a roll on. This seems to work very well and has become important to me when I know that I will be trekking in the pouring rain for a while.. I hike on the AT and it can rain up there any time at all with no warning at all so I have just gotten into the habit of taking those extra precautions...sabre11004
P.S. Make sure that you take foot powder and you can keep them dry on the trail...