Keith, how would you compare the Rogeti to the PPL TSE adaptor that you reviewed in 2013 (now sold by Hartblei)? I would be using my 17 and 24 ts-e lenses mounted via a Metabones iv to a Sony A7R3.
The PPL adapter was always a bit clunky to use - just enough for me not to bother some times ;-)
Very solidly built but took a while to swap lens or just set up and use. It's naturally set for left/right stitching, whilst far more of my TS-E17 use is up/down to get a square upwardly shifted end image.
I hardly ever use tilt with the 17/24, so the lack of tilt with the TSE Frame is not an issue.
What impressed me with the Rogeti was just how quickly it firmly attached to the lens and the way that it made use of both rotational adjustments of the TS-E lens. It also has easily visible levels.
The grip of my 5Ds caught on some tripod heads I used when I tried the quad (45 degree) stitching setup, but I note in the manufacturer's videos, they are using a camera and adapter.