Wow. Seems like original aircraft design has come full circle. Back in the very beginnings of powered flight, people thought more wings made an airplane fly better. Hence, there were some really ridiculous examples developed with 5, 6, 8 wings or more. I applaud Mayr for trying new things, but at those wing-loadings, the airplane will NEVER truely snaproll (although I suspect nobody really cares anymore), and the aerodynamics of that setup are going to be hell to trim for precision flight.