The Irish Air Corps list the provision of an Air Ambulance Service amongst the reasons they exist. No harm to the boys in blue but, as long as they are there and as long as they continue to provide this limited service, (which is the airborne equivalent of using a Land Rover as a makeshift ambulance) then governmental agencies are able to field away any requests for a proper EMS arrangement.
If there is to be any hope for such a service, then it will have to be done privately but there is no telling what the likely political implications might be. The Dept. of the Marine doing SAR with CHC might be a useful precedent.