A few thoughts and questions....
How much did the finished product weigh and how big is it rolled up and packed?
What if you build the shell sort of like a pad extender so that you can go 1-3 IX layers as the trip requires? Is this doable?
It sounds like those that already have a UQ, especially a summer or 3 season one may be able to slip in a layer or two of IX to make it a 4 season setup. For that purpose would you bother adding a shell to the IX or can we just slide it in between the UQ and the a hammock?
I have a 1/4" gossamer gear pad I use during summer trips mostly for the bug protection. Do you think a single layer would accomplish this?
The remarks about using packaging foam confuse me. If closed cell foam in general works this well then shouldn't the blue wally pads be good for arctic expeditions? My humble instinct is that either the marketing is over hyped or there has to be something else going on here other than just 'foam'
It is interesting to see this develop though.