Practise makes, second nature. Automatic responce with hands flashing around the cockpit finding the correct switches, levers and giving you that little bit of spare capacity. Yes they happen i know, as do those of us that flew the early LYNX mk1.
As instructors we often spend to much time sitting in the hover chopping throttles scaring both student and instructor and putting the aircraft at risk of heavy landings and roll over. There is a risk in flying these machines but more of a risk flying with people with big egos.
Personally the list goes from countless single engine arrivals in Lynx, through engine shut down at 300ft in a gazelle, Hyd failures in 206 Hot battery in a 355 with a thermal runaway, engine failure in a robbie at 800ft, fuel starvation in a Bell47 due to the rubber inner of the fuel tank de bonding, piston through the side of the block in a 300 and a drive belt failure to the tailrotor on a Rotorway in the hover and the list goes on.
Never get complacient, one day it will bite and hurt not only your pride, your pocket, but your families.
Now where is that off switch.