Bill,
No prototype. I am a designer, I don't do a lot of building and almost no flying any more. Several of my medications say"may cause dizziness". I also have trouble getting pictures back of many of my airplanes.
With the dihedral and equal anhedral on the wings she should not have any "dihedral effect. She should fly the same as if she had straight wings. The dihedral-anhedral wings just make it look a lot sexier and do not need any struts to attach them to the fuselage. Structurelly they offer some advantages to conventional bi-plane wings. The Aero engineers in the group can explain it. As a dumb Mech E I can design machines that work, but can not always explain why they work. I have one one patent that all the PhD types in the company said would'nt work. After they spent a bunch of time and money for a study at the University of Illinois, the University told them that it definitely would work.
People who have built my airplanes like the way they fly, so I must be doing something right.
Thanks, Pat