I speculated about this on another thread, but I thought it would be worth discussing by itself. I have an Oware pad, and judging by the comfort that people tend to get out of it vs. its R value, I'm thinking that it has a VB effect. I'm wondering whether people have experimented with using an Oware (or GG) pad as a VB underneath and another VB layer (silnylon tarp? garbage bag?) on top. It seems that this would keep condensation out of down top quilts.

Would this be effective? Warm? or would it just be terribly uncomfortable?