Hey tim, its david-I dipped a bit too much into snakebite juice last year. I'll be there again. I'll be testing my 12 oz summer quilt (1 layer of climashield XP insulation), along with my montbell thermawrap parka santa got me, to try and reach the 30 or so it will be on the mountain. I have my doubts, but I have a silk bag liner and a reflective silnylon VB liner just in case. I'll be bringing 5-10 people with me on a 20 mile 2 nighter with plenty of snake bite juice, and better judgement with which to use it. Can't wait to see what kind of crazy systems people have come up with. See you there.