Maxangle
Sorry, but my post wasn't really concise. (this one probably won't be much better)
My point was that the aircraft commander should not really consider keeping quiet beyond the "evacuate' order, just to pass the responsibility/liabilty on to someone else. This quote-
2) if you say simply the word "EVACUATE" without any mention to the side (left or right) you tranfer this responsabilies to the cabin crew and you are "legal protected".
That is just being slope-shouldered, in my view.
"Evacuate, caution fire on the left"
However, having never been in the position to demonstrate any of this, I am just saying what I would hope to achieve, not what might be achieved in a real event.