Brilliant
A couple of the EMS/SAR services in Aus have dedicated paramedics for the aircraft but because they are relatively understaffed within the Ambulance Service, they work on the road and get called in for any jobs. They are not normally called away very far from the heli-base and their response times are very good.
In Queensland, the paramedics are based with the aircraft full-time but they too can be called out on the road if there are no other crews available.