A pretty sure bet for an agenda item at today's Air Canada Jazz management catch-up is a discussion of whether taking lifejackets off their aircraft where possible is quite so sensible in the light of last night's events.
I said at the time they were brave and wondered if the saved dollars were worth the flack. My guess is that they're thinking much the same thing themselves now.
That said, one of the commenters on the above thread reports that USAirways didn't have lifejackets either - relying on flotation cushions. And it rather looks as if the lifejackets being worn by the passengers on the Hudson River A320 got them from the boat crews.
Of course, as it turns out, they didn't need them. But if things had not gone so well and they had been in the freezing water with flotation cushions, I wonder how it would all have ended? At least two passengers are reported by rescuers as having been more or less incapacitated as it was