Purplepitot - beat you by one year - No. 40 Aircrewman course. As you say we were taught to take control and land after a few hours training - so it is very feasible.
I now fly single pilot with dual controls fitted permanently and a crewman flies in the left seat, but company and CAA rules dictate that only pilots can handle controls. So of course officially this means that my crewmen do not know how to take control and land should I become incapacitated.
Well I don't plan to become incapacitated, but I do plan to live a long and happy life.