I have been checked many times. Locations include NUE, FRA, BRE, HEL, FLR (three times, twice by the same guy), NCL, and BRU. With the exception of BRU, every single check was efficient, to the point and conducted by professionals who knew what they were looking for and when in doubt asked questions. It was a pleasure to have them. But the guy in BRU was a plonker. He wanted to know why we didn't perform fuel checks at every waypoint on the listed on the flight plan (AMS - BRU, 19 minute flight). I told him that he was clearly not qualified to check us and told him to p!ss off. And he did. Never heard another word.
PM