Oh I dont know about that. I think you would be able to operate here as I cant see how they could stop that but they (it seems) would look to stop people basing N reg planes here. For what its worth and I have no factual basis for this I have heard in this past that France has been clamping down on N Reg for a good while.
I am pretty cheesed off because I have only just (last July) gone onto the N but it sounded pretty convincing to me that they intend to put a stop to this apart from the commercial operations.