FAA FIT / JAR UNFIT
I have tried both the Specrolux & Holmes lantern unfortunately without success
Good luck with fighting for a change of attitude or rules
My advice to go FAA route was based on you staying in Europe and flying N Reg aircraft so no requirement for a green card. Most business people realise that N Reg is a better business proposition which also enables less restricted operations. Most biz jets are N reg for that reason.
Just a thought !