Betpump, try thinking outside the box???
Firstly, someone could have dual nationality or dual visas and require both licences. Secondly, someone could train in SA (it's a heck of a lot cheaper) then convert to JAA. Yes, they would have to do all 14 exams but, if it's all fresh in the mind having studied the subjects in another country, it's not too big a problem to write a few quizzes is it?
Might not be everyon'e course of action but hey, pros and cons ... it's not that daft.
Cheers
Whirls