"Terra Nova better hope they buy some sort of warranty insurance because they are going to need it using such a light weight material."
I'm pretty sure that TN's target market is the Brits doing mountain marathons like the OMM and LAMM, home of the balloon bed:
http://www.balloonbed.com/Index.htm
It's worth checking out the kit the UK adventure racers carry because they're genuinely SUL.
