IFR currency

I know the rules on IFR currency as far as the FAA certificate is concerned
but I have a scenario which my be worth a debate.

A pilot holds independently both a FAA/IR and a JAR/IR. The JAR IR is valid
for 12 months and must be revalidated in the three months preceding the
expiry of the rating, usually with a proficiency checkride. The checkride
is required whether the rating holder has done 1 or 1000 approaches during
the 12 months.

The pilot has not flown the 6 instrument approaches etc in the immediately
preceding 6 months so is out of currency with the FAA/IR. However the JAR/IR
is still valid and in the next 2 months the pilot flies 20 instrument
approaches, dozens of holds , airways tracking, the lot in fact all solo on
his JAR/IR, does that activity all written up nicely in the log book then
make him current as far as the FAA is concerned?

Certainly it would have him as proficient but would the pilot still need to
go off with a safety pilot and do the 6 simulated instrument approaches etc.
Reading the FARs it would seem to me that he would despite the fact that the
approaches were done legally in the respective JAR country.

Chris