
I've got one, so has Andy Howells - you'll find some comments just put on his website at http://www.ecotrend.org.uk/trek/
I've used mine for 5 camping nights so far (2 in Feb and 3 at Easter) as well as carrying it as an emergency mat on a ski-touring trip.
Yes it is small, but it works. I'm 6' btw.
I stick a small sitmat under my head and neck to provide a bit of extra length, and use my pack under my legs. The insulation is every bit as good as a Prolite 3 Thermarest and if anything it inflates more easily. The pack size is tiny. The weight is 280g.
It is long enough to reach shoulders to hips for me. Personally I wish it wasn't quite so tapered, but I have got used to it. After the first trip I wasn't quite convinced but having used it again I didn't have any problem staying on it whether lying on my back or side. Before this I used a 3/4 length Thermarest but now I'd expect to use the Torsolite for most trips.
I guess if you really like your camping comfort then you'd be better staying with something larger, but if you're keen to shed weight from the pack then it's worth considering, and more practical than you might think!