Another newbie question.
I once saw a comic strip of a man in a lab coat (short sleeve) observing and taking notes. The object was a couple bundled in parkas--shivering in obvious discomfort. The caption read: "It is a scientifically proven fact that Floridians can freeze to death at room temperature." That is me. Below 60° I am at risk of frost bite.
I regularly camp (backpack) 3-4 times a year intemps below 40° and once a year at or below 20°. I understand how compression reduces insulation value (been there, got the poster). I have a Kelty 20° down bag and an REI fleece liner. Keeps me warm most of the time with double layer of padding on the ground. How effectively would you think that a adding a (semi inflated) Big Anges Insulated Air Core Mummy Pad inside the bag while hanging with say a 3/4 Yeti? Again, I am trying to keep weight (and cost) to a minimum. I can take being cool, but not cold to the core.