at least over european sky it is forbidden by JAR-FCL to inentionally shut an engine for training purposes.
beyond this, john- i would respectfully disregard with some of your comments too.
e.g pump cavitation is not that dramatic issue on the pt6- when you shut it keep on boosting by the electrical pump until core speed drops below 10% and all is fine.
the whole "speed battle" about the C425- well, one was talking about the barberpole in indicated values, you were talking about cruise performance in TAS, this was sorted out i think.
ok... its saturday evening now in germany, i have off today, my girlfriend is calling to come down to her... i feel the fuel pressure rising- to prevent any cavitating, i think i need to drain the pipe now...
keep cool gents , see you later !