SoS, in theory one would think so, I agree. But it's not 100% guaranteed and, as I said, there comes a moment when self preservation kicks in.
No, but it is probably somewhere between 85% and 100% and that is good enough for me. If the cabin was intact, there was no smoke or signs of fire and we had come to a complete stop, I would certainly give both the flight crew and cabin crew time to assess the situation before rushing in a mad panic to the nearest exit, even if we were on water.