Right. So, if you're about to go somewhere where your phone might be arbitrarily searched i.e. an airport in your own or another country, I guess this means it'

Right. So, if you're about to go somewhere where your phone might be arbitrarily searched i.e. an airport in your own or another country, I guess this means it's a good idea to shutdown your phone and put it into a Before First Unlock state to protect your files.