Garfield, happy to hear you're proceeding with Protothrottle. Gentlemen such as Boomer and Thomas Klimoski have opened my eyes to a different type of operations (small switching layouts) which I personally think the Protothrottle would be a very valuable tool. A chance to savor the operating experience and kick back and relax with your favorite beverage while operating prototypically. Granted this isn't for everyone, but I for one enjoy the relaxed pace. Best of luck my friend.
Dwayne