I guess weather the camera tether or not may depend on your needs. Ala Sony I had did have some tethering capability over USB, but it may be limited.
Does the sony tether?
Only I'm thinking a small view camera like the horesman or the home workshop one in the other thread would mean you gained at the wide end becuase the lens flange to sensor distance is shorter and you also gain some shift if the image circle is big enough.
If it does that could be all the studio camera with movements I would ever need for less than the cost of just a digital back.