On a similar vein of risk taking, there are many instructors who are perfectly happy to simulate engine failure shortly after take off in a twin by cutting a mixture control (rather than simply retard a throttle). However, when asked would they simulate an engine failure say at 500 ft after take off in a single engine aircraft by cutting the mixture, the answer is generally "you gotta be joking, mate - too dangerous. What if the engine doesn't pick up when you move it back to rich for the go-around?"
Fair enough question, too. Then why risk the same mixture cut in a twin which may also result in the engine not picking up when ready? By the time you realise it hasn't picked up the airspeed will have decayed dangerously with a windmilling prop and with all that drag on one side it the aircraft may not climb and in fact directional control lost if speed is well below blue line.
Morale? Safer option is to use the throttle closure method of simulating an engine failure in a twin - don't you agree?