I think the level of moisture depends on what kind of hot tent. If I'm in my Arctic Oven, then moisture is a non-issue. But my cimarron is by far the wettest tent I own. You bump the wall on that thing when the stove is off and it's raining on you. And if things get soaked, I can barely stand to run the stove for more than 15 minutes before I get toasted out of there. No way I could run the stove long enough to dry out a bag. I use a Nemo treated down bag with the water proof toe box. I'm tall so if I'm in anything other than an AO, I'm playing footsie with the soaking wet tent wall all night. I've never had a problem with my bag and I've been on some long soaker hunts. Since the down is treated, the only thing that ever gets wet is the actual bag. So the same concept applies that you just wear (sleep) it dry. It has worked for me so far without issue.In a hot tent, I would only consider down.