Epiphany - helisdw's post seems to indicate that things are far from clear cut in HEMS/EMS and calling one organisation's protocol prehistoric is surely a clear indicator of lack of understanding of the complexities of the issues - petulance doesn't become you.
The consultant anaesthetists who frequently fly with us are quite clear that getting the patient to definitive care is paramount - maybe because our aircraft is large enough to permit continued work on the casualty and maybe because the situations we are usually called to mean the casualty is in a hazardous environment, but stay and play is very rare.
A new protocol for cardiac patients is quite clear that scoop and run is the way forward as the best treatment for the condition is only available in hospital.