I like old 6x9 folders, but the 105mm that comes on most just isn't wide enough for my tastes. Over the years I've owned Bessa I/II, Ikontas/Erconas, Venturas, Billy Records, and a Medalist (hated spooling for 620). I've never heard of the Tenax, but will be doing some reading after this post. I'd love to see some shots from this. 65mm would certainly be right up my alley. It looks like that folder has adjustable rails for focusing. I've never seen one of these cameras, but would be interested in knowing more or even aquiring one.
Nice work!