You've lost me again. Where did the comment "restricted" come from?
It's a fairly simple question, I think, that is causing some very confusing answers;
Pilot holds a full, unrestricted (?), FAA on both SEP and MEP. Tests passed.
Holds a JAA MEP only - and lives in JAA land.
Can pilot use the ICAO "recommendation" to fly SEP using the FAA licence in UK whilst being the holder of a JAA licence.
Going the other way, the answer is "No" - as the FAA will not "render valid" nor issue a 61.75 licence to anyone who already holds a full FAA licence of any kind.
Is the same deal applied when coming into JAA land?