John...............
Thats an interesting point...............A while ago there was a post here about a Melbourne [Australia] CFI who had a ?? throttle cable problem and could not lower the collective without overspeeding [maybe a governer] [H300]......he climbed into CTA trying to get back to his airport...over the top he asked his student to select idle cut off with the mixture control.
The power of the yaw and other aspects of really having NO engine surprised him, and that is dispite him doing thousands of "practice" failures.