Yes, I don't like them either. Tried one on a view camera but didn't like it one bit. No real advantage and seemed to make viewing GG with loupe more difficult. I only use on on a Graphic which was originally designed and delivered with one... and that is mostly because, due to the design of that camera's back, if I remove it my GG will be out of register with the film plane.
Originally Posted by E. von Hoegh