In our facility with the light sheet we have many external users and the tagging saved my life in more than one occasion whenever I was requested to quickly retrieve pictures from our archive.
I will make sure to recommend it when chairing the session on multi-user systems in facilities at the LSFM conference in Sheffield, and I will be happy to offer a pint if the guy that had the idea will be there

Regards
-Marco Marcello, CCI Liverpool