I realise we have gone slightly off topic here but the point has already been raised ref. evacuations.
To those of you who quote stock phrases from SOPs that are meant to cover such situations, let me ask you this;
Have you ever been inside a cabin full of screaming and shouting passengers, climbing out of their seats, rushing towards exits, opening lockers, pushing and shoving, ignoring all commands and abandoning common sense in an aircraft that has just come to a shuddering stop with a glowing fireball just outside the window?
In an ideal world, such commands from either the flight deck or the cabin crew will be strictly adhered to and all will go according to plan.
In reality, it will be a whole heap different, it always is!
My own experience is limited to evacuation trilas carried out at Cranfield in the '80s from a Trident cabin but I can assure you that compliance with instructions and an orderly evacuations are not the norm.