I showed Mike Voigt the setup at Shot Show and he said two sights therfore Open Class.
Might want to call the folks at Moutning Solutions Plus they had a mount at Shot Show and with the flick of a switch it dropped to the side and out of the line of sight. I didn't see it on there web site yet but here is a link: URL=http://www.mountsplus.com/index.htm]Mounting Solutions Plus[/url][