I was sitting in the woods late yesterday (deer hunting) and had my Reo next to me within easy reach in my stand. It was snowing heavily and about 29F. My 95% vg just did not want to flow and I got more than one dry hit. My Synergy friction fit tip kept pulling out of my RM4 because it contracted in the cold. You have to keep these babies warm and in a pocket! I went through this last year and should have known better. Time to whip up a heavy PG juice and give it a try maybe an apple recipe. Vapor is great for testing the almost non existent breeze.