Here's a few of a non-flyable, but full-scale, Morane Saulnier AI.
Wikipedia reports that these aircraft were fast, with a top speed of 140 mph. They flew for the following Escadrilles: 156, 158, and 161 in early to mid 1918 before they were replaced by the Spad XIII--supposedly because of wing failure problems. Which makes me wonder--The Fokker D VIII had the same problem. I wonder if some of these reports of wing failures were made by pilots who felt a little skiddish about flying a one-winged aircraft. I mean, two or three winged planes lost wings too. Perhaps the loss of a wing in many cases was the result of battle damage and overstress, rather than simple design deficiencies. Something to ponder, at least.