I have no idea about the 139 spec but 189 LIPS is certified, and 189 FIPS in the loop for cert this winter. LIPS (w/o rotor heat?) is fitted to BIH FISAR aircraft, and the cert conditions are reportedly pretty good.
My main concern regarding training is the long term future for the lads down the back. I still believe that the CAA has missed an opportunity to create a world-class system for SAR rearcrew by having it as a licensed aviation trade that would have produced the sort of standards that MilSAR have developed across generations of bouncing winchies off boats and rocks.