@John Eacott: my experiences are similar to Hueyracer's.
Both the doctor and the crewmember disembarked Rotors running, the doctor to get on scene asap and the crewmember usually to prevent others from injuring themselves on a helicopter in the cooling down phase.
We trained our doctors and crewmembers to do so safely. But it becomes anonther ballgame if there are controls mounted.
Flying offshore now I am reminded of this every time we do a hot refuel offshore and one pilot struggles to exit without thumping the controls. And the adrenalin rush is a lot less than on HEMS.