I asked Brian Johnston, head of the Isle of Man aviation authority a month or so ago, if the EASA regulations were going to affect the operation of 'M' registered aircraft by FAA only licenced crews. He answered that he is not aware of any forthcoming rule changes and that they are not part of EASA anyway. He seems like a very decent, entirely trustworthy and straight talking chap so I'm inclined to believe him on this one.