I am currently buying a Toyo vx125 4x5 view camera and like the idea of using a reflex binocular viewer to help put the image upright, quicken composition, and avoid a darkcloth most of the time. The Toyo reflex viewer is very large and loo ks difficult to pack/carry. I have noticed that Horseman makes a folding binocul ar reflex viewer which looks like it might be much more compact. It is touted as being able to fit the Toyo, but I understand that it may need some kind of adap ter plate. Has anyone had any personal experience with this item? Is it great, s o-so, etc.? Any other advice for me?