BEagle,
Spain is not the other side of the Atlantic. Your attitude to European pilots flying in the UK only make the case for quicker EASA and Single Sky movement.
Unfortunately our industry is full of protectionists like the ones who advertise pilot positions where anyone with the right to work in the EU can apply (as they are legally required to do) but all applicants must hold a currect UK driving licence! Not many Spanish nationals would be UK driving licence holders for example!
Do your rating where ever you like in Europe and you will get a job cause most places I have come across don't ask where you got your rating - just the few protectionisis have a problem.
Regards,
DFC