And it's not a "thing" any more than your hammock is just a butt sling.
It's a high performance, long term, cold weather platform that does the job for which it was designed.
This system reminds me of that story someone posted on here about the arctic expedition where the crews' bags weighed over 60lbs after a few weeks in because of all the ice in the insulation.
I gotta say he has a great argument. I'd like to think that it makes sense... but I'm a scientist and data speaks volumes to me.
Documentation is what I crave here!
If this actually works I'd like to build a high-density open cell under-pad to test. Maybe a two-layer pad with multiple densities (high on the bottom-most layer and lower density on top-most layer for comfort). It may be able to be very thin and rather light (and likely less expensive than down- but equally likely to be at a weight penalty (and moisture advantage!))
Darn the burden of proof!
How can we do some testing?
I picture an ice cube in a block of foam and a block of "down" measuring the time it takes to melt... maybe...?
Welcome to the forum CITC !