It's an interesting dilemma...the only way to guarantee as near as possible to complete safety is to shut down between every sector, load your kit, and give all the passengers a briefing before loading them in and checking the belts are fastened, the doors are closed etc. However, if you did that working utility you would never get the job done.
So there may be pressure on you as a pilot to hot load, leave the cab with the rotors running and do all the other things we instinctively know are not the most sensible options, to get the job done.
Savoia..IF you had an accident operating like this, would your authority throw the book at you or support you? I ask this as one member of my authority was trying to tell us recently that we had to brief the crew between every flight - i.e we fly to a HEMS tasking, pick up a patient and before we take-off we have to give the paramedics and doctors a pre-flight brief...
FF