Tom
Glad you got your bag and like it. I guess it fits you right? I know you used two bags in a bivy for a long time, this will be nice.

Yes Tom, there is lots and lots and lots of discussion - but where are the scientific videos? I've seen some, and I know There is a lot of material available if anyone really cared. You could start with Jason and some of his pro trips to visit manufacturers.

All, I'm afraid the laws of thermodynamics still hold today even though some wild eyed dreamers believe that they can be as well insulated with no loft. If you want to try something not traditional, try it close to home...