thanks for taking the time to answer.
As far as I see the only thing this would really do is not using a CollectionView at all and filter manually, which, granted, would also work in this simple case.
The end result is not far different from what I currently do while it may be a bit cleaner, though.
It is also not using binding and only one status is selectable at any given time, but those are minor issues as the change for those is simplistic.
Unless someone else has an idea (that directly uses a CollectionView) I will think about using a variation of this or just stay with the current one.