I have done a SAR job (on exchange) with a single casualty in dreadful weather in a 412EP equiped with weather radar* and it was more than capable. However more than 1 casualty would have been an effing nightmare due to lack of space.
The Dutch also seem to manage with a 412SP, but frankly a yellow canary is significantly better for the job in hand.
.........and I am not SAR by trade!!
SAR Boyz..........Yes we know, but I would not do it as a primary task.
*Embedded CBs, High ground, heavy rain, low cloudbase. Colour coded weather radar & No Nav beacons /radar coverage. Just GPS and weather radar.