There is always MDI to CV modules, so many options in that direction, it seems unnecessary to build CV into everything, unless there is a tight connection.
Mentioned in the video are the movement ring controllers ( like the Genki Wave ( thread ), and the Neova MIDI Ring ( thread ) ) which might be an option for @Lampmeister to consider. They use larger hand movements that might be accessible, but both also use smaller movements on the ring itself setting up and sometimes in combination, which might make those devices not acceptable for this use.