I like sighting options.  I have Kraghaus mounts, receiver sights, a variety of Krag sights, and this thing, a Miller Kodiak mount.  The Miller can be quickly removed and a no gunsmith receiver sight put on.  I also have a bolt with a Rice peep I can put in after removing the Miller.  Removal is a simple matter of rotating 90 degrees.  I have one drilled and tapped receiver that I'm building into a benchrest rifle with a heavy Wilson barrel.  I dream a lot, seldom get around to the actual building!

The empties don't hit the scope, they hit the rear of the mount.  In the field, if I turned the rifle sideways, not hard to do while you have hold of the bolt handle, they'd fall out.  But on the bench they pop up a little then fall back down into the action.