That's what I wanted to do, I even bought the spuhr, but the spuhr takes up the whole rail and I wouldn't have anywhere to attach my dope card, so I went with seekins rings, the mv3 is attached to the rail on a 90 degree mount, and the dope card is attached to the front of the rail.
You also need a nearly hundred dollar mount to utilize the spuhr. So I'm sticking with rings and the rail mount