Edit: D'oh! The x-back is set up for MOLLE-style additions. Ignore everything I said.
Interesting design but I think it'd be improved by the ability to attach a gear pouch. Luckily that probably wouldn't be overly necessary, at least in my case. My most likely use would be while flying to off-shore oil rigs in the Gulf of Mexico and according to our safety guy 90% of downed-helicopter rescues occur in under 30 minutes.
Their
aviation drysuit is pretty cool. A few
minor additions and it'd be an interesting choice to wear while flying out to the rigs.

-Blast