MTC
As a former peace officer, in the mid 1970,s 80s . I had a stream light SL20 the most powerful flash light of the day, always carried it on my belt. For the above reasons.
However I am against any weapon light for the police,maybe exception for special teams. The local cops are not navy seals and most do not get enough firearms training as it is let alone waving a gun around with a light. YMMV