did you get lost on the way back from the pub?
My mate already has a shakey tube, and he is the guy driving the idea to buy these lightweight tubes. When you are walking 2-3hours to a hill loch, then lighter/smaller the kit the better
Yup to be fair after a long haul day you do know you've ben lugging it around Iain not to forget the fact it's easier to carry fully inflated which leads to other issues not least of which are catching the wind and simply just getting in the feckin road.
Also looking at the ones in the photo / site you've highlighted are certainly a 'V' hull and given no-one seems to be producing over here at the moment, might be a good shout not just for long haul trips but possibly not overly frequent users as well (maybe somone who only uses a tube once / twice a month / during holidays?)