Flying Bean , in Aus, all CPL holders are endoresed on any single piston engine aircraft under 5700kg (as long as they have the correct design feature endorsement), and can theoretically jump from say a Cherokee Six to a C210 without a full endorsement that you would expect when changing into a twin. It is a requirement that you are familiar with the normal and emergency operations of that particular type of aircraft before flying as pilot in command.
This can be interperated in many different ways. Realistically it would be up to the operators decision, though you would have to think hard about allowing a fresh CPL with only Warrior time to jump into a C210 and blast off into the wild blue yonder.
In the flying school I work for, we have a C210 and require all pilots that haven't flown the type to conduct an engineering exam (based on a CASA exam I believe) that covers normal, emergency operation, systems, loading and performance. They also get a pretty comprehensive checkout before they can touch it by themselves.
If you go
here you will find the CASA Single Engine Piston Aeroplane Endorsement engineering exam. It is usually published in the CAAPs and there are also exams for SE Turbine, ME Piston and ME Turbine
Cheers