Me and my lad went somewhere to camp last year, I forget where... but someone had one there. I'd ask him where it was, but he's in a mood because I won't take him camping next week.
Anyway, it seemed a great chair until the evening... much hilarity followed after a few beers as the occupant of said chair fell out of it... a lot! Whether it was the chair or the alcohol... will never know, but I bought some mini square-folding chairs after that... they're tiny (meant for kids really) but work well as light weight camping chairs for temporary sitting.
Matt (not sure of his forum name) from Chesterfield had the most luxurious camping chair I've ever seen on another trip out (to Matt's woods as it happened)... that thing looked comfortable enough to sleep in!