@Mr_Meatbomb: To evacuate using slides always adds an extra risk of personal injury. There seems to have been no apparent danger to either passengers, crew nor aircraft, hence to reason to perform an emergency evacuation. After listening to an interview of one of the passengers, he described it as the a/c "coming to a shuttering stop" but he did not even realize they had gone off the runway....
@Heli...: I´m not saying the cpt was a hero, not at all like Captain Sullenberger of the famous "Hudson river" who was doing.... errrhhh... let's see, that right: his job....