Hi all. has anybody treid out one of these air loungers? (See photo). The reason I ask is that as well as being pretty cool for use on the beach or in the back garden I can see that they would be pretty useful in a situation where you had a long stopover at an airport. They are easily packed away into your hand luggage and easily inflated and deflated. Far better than those uncomfy metal chairs that you get in airports, especially if you wanted a nap. Has anybody used one in this kind of situation? Any idea what airport policy is on these things?