I had one, about 4 1/2 - 5 foot tall a while back. It was same dia as the smaller ones though. Think it's still at me old house but will be well out of test by now.
Some of these new fangled places (to quote the Macc lads) wine-bar/bistro/fun-pub/disco/cocktail/carveries have full size cylinders in a cage outdoors and piped in, but its unlikely they will be able to loose one of those I guess!