My sedonas measure 28 1/4" tall, at 8psi unloaded. Factory 27s measured 26 3/8" at 20psi unloaded.
Took it for a first real trail ride Friday. I didn't drive it, but my wife said she heard something once while turning. A friend of ours that rode with her said she heard it a few times. I think it will be fine for now. I don't see any real damage, but I'll probably get a set of A-arms when they come out for the 22s.
I rode our Arctic Cat atv, which worked great with the honda factory 27s on it.