Devil, you should perhaps advertise a seminar on the implications and neuro-physiological impact of EMS flight scheduling and CRM. Let me know how it goes.
In the meantime for other readers - please understand that there is NO comparison between the demands made upon a single pilot flying a single engine helicopter in IFR conditions conducting EMS work (restricted area landing/take off) and a twin engine, two pilot helicopter operation doing the same. In this case there is a world of difference in which equipment (and crew) is everything!
Training is a given, we are obviously talking about people who are capable in what they do (hence the earlier proficiency related comments).