Here is a pilot project that has just kicked off using an Air Corps EC135 in the EMS role. It seems the ground ambulance will attend the scene first and if the patient is in a critical condition, will call in the air ambulance and meet somewhere along the route towards the hospital.
Six One News: Aero-medical helicopter to serve western seaboard - RT News Player#
Cautious welcome for air ambulance service - News - Galway Independent
Pilot aeromedical service for Ireland | Waypoint AirMed and Rescue Magazine
It's a step in the right direction and hopefully will lead to a proper air ambulance service here.
500 Fan.
P.S. At about 15:20 today, an IAC EC135 went into University Hospital in Galway. That might be the first "shout" for this new service.