i have the ones you have but in beige and they are great. the back arnt anchored but they do fit but can still move. the front how ever hasn't moved on me yet and they are anchored juts like you said. cleaning them is easy just dust it off and iv let them sit in light bleach water and air dry. keeps the carpet nice and dry and clean. I dont have those metal clips though. do you have any pics?

__________________
2005 Black x5 3.0i