We have the same policy as mentioned above. After parking brake set, Capt. makes PA "Attention crew at stations", while the F/O has already notified ATC, then Capt. calls "ECAM Action" or "On ground emergency evacuation check list" depending on the situation. I have never heard of shutting engines down immediately after stopping, what about ECAM?
And even more so what about vacating the runway in none evacuation required emergencies?
[This message has been edited by CaptA320 (edited 31 October 2000).]