Not sure about the Leopold or the double bull. I have the Nikon 600 and it works through the screen on my Cabelas Full-Draw blind. I am sure the Leopold would work. I almost bought one of them, i was at Cabelas trying to pick between the Nikon and the Leopold. I told the guy to get a Leopold out and i would take it. He went to the back room and said he was all out. So i got the Nikon and i am glad i did, the more i looked at the Leopold the more i disliked it. When u look throught it, it looks like a fighter jet, there is so damn many symbols and numbers u dont know what the hell is going on. I like things simple, but i know leopold makes some very nice optics.