The inertia in the rotor system does provide a false sense of security in the auto, yes it is reluctant to slow down and hence does remain stable, however the other side of it is that it is also slow to speed back up if you inadvertantly let it get on the low side.
The throttle correlation skills add a totally new dimension to basic elementary handling that Robbie pilots dont have to worry about. "Governor off" training in the R22 will teach you nought about flying a Bell 47, in fact the tendency for the R/RPM to increase markedly as you raise the collective from flat pitch to the hover in the 22 is opposite to what happens in the 47 (and most) helicopters
My 2 bobs worth, you will enjoy the challenge