I'm not so sure I'd be rushing to hire Sloly if I was looking for a Chief of Police. I'd worry about anyone running a police service who isn't a team player and who can't operate unless things are being run according to their personal views.
Chiefs of police have a great deal of power in our society, and they can be hard for the public to control (especially given the code of silence used within police forces to cover up anything wrong or just embarrassing).
Sloly would have impressed me more had he orchestrated his departure in a quiet, professional way. If then he wanted to express his views on policing, maybe with a view to securing a new job, that would have been fine.
As it was, the episode comes across in a way that makes him look petulant when his views on different policing issues did not hold sway. He began openly criticizing police policy decisions, and as a result (not surprising in a highly hierarchical organization) got a push towards the door.
It's great that he may have some views on policing that might be more popular with the majority of the public, and might even lead to more effective policing, but beware putting someone in charge of a police force who handled himself the way Slowly did. You don't want an inflexible dictator at the head of that kind of public institution.