Also there with you guys! Ive been looking for a Roden O1 locally, to no avail. Ive also just picked up Kev KPL Publishing book on the O1, and Erics build of it. The detail and clarity is really great. Its REALLY made me want to pick up an O2 when it comes out, as Im digging the FAC stuff lately.
I actually saw that exact bird at Osh Kosh EAA Air Venture back in 2015. Really cool to see it up close and personal.