Hi Eric. I am still dealing with the frozen boot/cold feet issue. If I don't wear a VBL, moisture from sweat builds up in the lining of my snowshoeing and ski boots, which means cold feet, and there's no way to get the moisture out in the field. A VBL works well, but I have to wear my socks inside them, otherwise they are just too clammy feeling. My feet stay warm while I am moving during the day, but I have to get dry socks on right away when I camp. I have not been putting my boots in my bag at night, but wearing warm socks in cold boots helps a lot to get started in the morning. Best, Will