The monowheel with those -sort of fragile- tipwheels can be a bit tricky to move on the ground. If you have your own grass airfield to operate from and maybe stand-by assitance on the ground like from club members it will work. For regular aerodrome visits and taxiway use I'd clearly prefer the full undercarriage.
This is the new company that builds them now:
http://www.scheibe-aircraft.de