@tecpilot
Well, on my rating external load was part of the training, and the hook was operated by the flight test engineer who also gave the ground instruction on the hook system.
The initial training was done on a T2, the yellow helicopter you see in pic 1.
The police helicopter is a P2 which was used for the differences in training because in JAA land a type rating in your ticket says "EC135P/135T".
Both aircraft were chartered from the respective operators by ECD, and HBYG especially because of P2 AND double hook.
Type ratings are not given on ECD ships because ECD has no ships.
ratings are given on customer aircraft, so when you buy one you get training on your own helicopter.
But I didn´t buy one...