Condensation build up is inevitable in the cold. Even if your have no tarp or over cover of any kind, it'll build up around your mouth or whatever clothing you've got covering it. I've never bothered trying an over cover or sock, because of all my years spent in a tent, I knew it would be more trouble than it's worth. Even with jst my tarp over me pitched open, it'll still build up on t inside of the tarp.
The only insulation that I can say works no matter how wet it gets, is wiggy's lamilite bags, and wool of course. Only problem with them is they're bulky and heavy.
I got all new quilts from UGQ with the new dwr down. That excels where condensation becomes a problem. Getting your bag/quilt wet is no big deal for a weekend trip. When your out for a while, that repetitive wetting will build up and and it gets harder to dry out. That's where it's a real problem. And that's where the dwr down shines.
What I've found that really helps, and mostly works so well because of the bridge hammock design, which I think yours is. The frost bib isn't for me, I move around too much. And no matter what, moisture us building up, if not on me, then on the tarp, then on me.
I have a thin wool blanket I got cheap from a surplus store. I cut a piece off to place over top of my quilt. That way it stays dry, the wool lets it continue to breathe, yet stops any moisture building up on top of it. Now if you had a vapor barrier liner/clothes to stop moisture rising through the quilt, and your wool blanket on top protecting it from all the breathing, then you shouldn't have any reason to worry.
When it gets real cold, I find just a tq does it for me. I move around and the quilt comes loose. So I'll take a small summer bag and/or a vp liner to use inside my quilt. It gives me the full seal of a bag, yet I still have the bulk of my insulation a light and compressible down quilt.
Also, look into hot tenting, I actually have a tarp made for a ahammock that is shaped like a tent with a collapsible titanium wood stove. The tarp and stove together weigh under 5lb, and take up little room. It's hard to tell you how nice it is to wake up in a warm place to get dressed, then have a warm place to undress and fall asleep. It even pre warms my quilts if I let it burn good for a little bit.
Do you get inside your summer bag and then layer your down TQ over you, or do you use the TQ inside the sleeping bag like a liner almost?
Thanks for all the feedback and tips. Great stuff here. I appreciate it!
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