Police does use the EU variant for the plates, though. You're right, of course they could go with FE Schrift on their old (non-reflective, non-EU) plates. That

Police does use the EU variant for the plates, though. You're right, of course they could go with FE Schrift on their old (non-reflective, non-EU) plates. That would, however, be a new combination that would match neither the new civil plates nor the old ones.