It's a taildragger. I seem to recall someone saying that flag-gear was preferred for taildraggers because it was less squirrelly than the tube-gear. Also, It looks like the gear legs were re-arched for greater prop clearance, which I'm guessing is not possible with tube gear.
Either way, It's likely the one who did the conversion chose the flat-leg gearbox either because that's what the STC called for, or that's what the owner wanted. Still, a good point-out and worth a buyer's time to check and make sure the taildragger STC paperwork is present and was followed.
