I would leave it as it came from the factory. I agree with the above posts.
Only reason I would think a LE Agency would spend even more money to remove them, is if they were in the way of agency specific markings, like on the tailgate or something where they would have a reflective sticker.
Unless they have markings on the hood too or something that would cause someone to think it was a impersonator or phony with the Satin Black hood sticker on the hood of a White one.
I saw a White Factory Demo PW out in Baker, CA earlier this week towing a Fiat trailer full of "500's". It looked sweet. But, I see how in a distance it could be perceived as a little "Official" looking. All the many Agencies out here by Lake Powell use White 4x4 Dodge P/U's and I am still not used to it, coming from CA where everyone previously had Crown Vics until they started running them out of service. All these new model LEO vehicles still strike me as odd looking.