I suspect it will be a very short list.
As short as the "knowledgible" owner list.
Tho they are currently out of style I have operated motor sailors that were fitted with old Euro style CPP.
These had a reduction gear , but no clutch , the prop was feathered for neutral, and cranked for FWD or REV during docking. Took some getting used to but great while underway.
A big far Swedish double ender could point with the racing fleet with their MD 6 just above idle , with pitch cranked in.
Hot water , refrigeration and good speed and no under loading , not bad with the twist of the wrist.
Today the demand seems to be joystick docking , not efficiency.