As a cop I would prefer to go to a job with a handler and their dog than 10 other cops... You can be standing there, a whole bunch of you, and some people will be shouting and swearing and threatening, but when the dog comes out they are nice as pie!
One handler used to let me take his sniffing spaniel out for a pee when we were at the nick- I've never been dragged around so much by any dog!! He never offered to let me take his GSD... And I probably would have declined