I have been reading this thread since it started and would like to comment.
At my company, in our sim checks the process for an on ground evacuation is pretty strait forward. Bring the aircraft to a stop carry out whatever procedure needs to be done and then ASK the RFF services if they still see a fire, or take a look at the Fire PB to see if it is still lit.
The only interaction that we have with the Cabin is to prep them for an evacuation and then to either call an evacuation or tell them to stand down. At no point do we liaise with them.
Therefore with RFF not on the scene and with no fire lights illuminated what should a captain do? And at a company with little thinking outside the box procedure and training rule.
There is still the chance that the CC could call an evacuation and we activate the EVAC command button in the cabin. However, not all airlines do this. And when you are from a country/airline where you blindly trust in your pilots and are told that you are just there to look pretty and serve coffee do you think you'll have the confidence to initiate an evacuation? And can you, when you've been trained all these years to wait for the captain's command.