Insulbrite has it's uses, but, for something as big as a UQ it would be somewhat stiff, and wouldn't fold up, or compress down very small. For insulbrite's metallic heat reflective propertys to be of benifit, it would have to be less than about a 1/4" from your skin. But, it does not drape well, and to hang it underneath a hammock would be problematic. Perhaps if you cut darts, so as to shape it to a hammock-like configuration. But, it would not be wind proof on it's own. Wind resistant perhaps.
I do use it in other items, principly panels in clothing. I made a back panel insert for a disposible construction clean-up 'Tyvek-like' hooded jacket top I bought at a dollar store, and, it is just super for insulative warmth.
In my experience, there has been no issue with condensation. I used a big piece of insulbrite in my HH SS. Because it was tight up against the hammock, it performed very well, but, again, it does not compress down enough for me, to be practical at that size. IMO
Never more than one man left behind, so far !