It would be a (very welcome) first if an airline actually allocated seats (wihtin a particular cabin, of course) on the basis of height. In Y, where it is rather more of an issue, I've never known it happen - although once, on a United domestic flight, the cabin crew felt so sorry for me they just moved me to F.

Anyway, let's hope that shorter passengers actually prefer having a bed that has a proper footend. They should be warned that if they sit in Swanhunter's seats they might slip out beyond the footrest.