Georgee, neither the Conquest nor King Air 90/200 series require a Type Rating. The King Air 350 does. It is all in the fine print, but up to 5700 kg these, and a list of other relatively complex aircraft, now fall into Multi Engine Class with differences training required. It does not help that in various places the regulations refer to types of aircraft (as in a Beech versus a Cessna 'type') but one has to read each reference in context.
I believe that operators need to set their own, sensible agenda for just what the 'differences' need to cover. Obviously engines, props, systems, limitations etc.- all of which can be done safely on the ground. Then some ICUS. Enough to satisfy the Insurers, enough to impress CASA with the thoroughness; not so much that people will put themselves in harm's way.
Captain Nomad - your recent experience with CASA highlights the sheer stupidity and pointlessness of that approach to engine failures. Typical aero club bullsh!t. What does it achieve? Unless the aircraft is right on VSSE, at max all up weight, at a limiting density altitude, gear hanging out etc all it does is give the trainee a false sense of how easy it all is. Talk about negative training! But to do otherwise in the aircraft is too risky, hence they should allow appropriate simulation in a device that exhibits comparable - or more difficult - handling.