What is the logic behind that edict from on high?
What difference is the quality of training at either place...licensed or un-licensed?
I can see a requirement to operate out of a controlled airfield at some point in one's training but all of one's training?
What maneuvers are done on a revalidation ride as compared to the initial check ride that would make any difference?
....or is this just some more CAA bureaucratic mindset?