It's interesting for sure and just a little kookie. I think it fits into a whole raft of aircraft that were more of a visual idea than an actual improvement on the standard classic plane design. I think when you start putting that sort of complexity into a wing you begin to lose efficiency due to added structural requirements. I do love kookie designs though from a pusher prop perspective it might be a little more efficient thrust wise because the air isn't chopped up by the wing already and it might be a little quieter. The wing will weigh considerably more than it needs to though.