If a police officer in their own time uses say AW, contacts and books an escorts and keeps their job completely separate then I don’t think that’s wrong.
But the problem is many will mention they are police officers. Some will probably do it to boast, some will do it to try and get a power edge over the SP and some do it after getting getting attached. All types then are in a position where it can lead to them abusing their position. The last type usually get manipulated or do it for fluffy reasons, the first 2 types do it for for their own reasons.
So basically I think police doing searches is a major and common source of corruption... that needs to be punished. Legally booking an escort in their own time shouldn’t have anything to do with it, but the coppers that book escorts and disclose their job are on a slippery slope