Ok, I’m starting to get some ideas...
http://en.wikipedia.org/wiki/File:Rutan_quickie_q2.jpg
Start with the above plane. But make the upper wing and the lower wing angle towards eachother until they meet about 10-15’ from centerline. Then from that point, a single wing extends another 10’ ish out.
So the upper wing will be foward swept to the joining point, and the lower wing will be rear swept to the joining point. The upper wing will have a negative dihedral, and the lower wing a positive dihedral.
Yeah, I think I’d like the way it would look. Not so sure about how it would work though.