Originally Posted by
SteelerNation
I've found the same temperature range for my IX TQ/UQ combination. I have also planned to use my IX UQ in addition to my JRB Down UQ for temps below 20 to augment. Not sure if I will do that now, based on the Vapor Barrier discussion, but I would certainly be cautious about putting it outside my down, as that might trap moisture in the down itself.
Again, no practical experience, but based on what I read, a concern. Curious to see if you've seen any sign of that.
SN