How are Bouviers different from German Shepherds or other “police style” dogs ?
In general, the similarities are more important than the differences; if you think of German Shepherds or similar breeds as “too rough” or “too aggressive” then you should be thinking about another breed. I have no objection to breeding dogs to be soft, easy to live with family companions, and the Black Labs and some of the retrievers provide an ample supply of worthy candidates. But I do object to watering down the police breeds, and so should you; the breed should mean something in character as well as appearance.