The first prototype has arrived and is operational. It will be available for purchase in the beginning of November after verification of the second version, which has a smaller footprint, is more compact, and can be used with both camera grip up and down.
It is a lightweight and compact fixed tilt panohead with a rotator at 15 degree increments, marks for 4 and 6 divisions, and has free access to both aperture and focus rings.
Estimated price $150 USD
Pictured below is the operational first version and a rendering of the second version. See link for more details.