All good points, but, even with changes in door/latch mechanisms, if the reversed handle is horizontal and facing the rear, it can easily be moved 180' so it would be facing forward! I just don't think the factory would deliver a car, especially the Darrin, with the door handle overlapping the quarter panel! If you think about it like the handle pivot point is the thumb button of an older GM door handle for instance, the button is toward the rear and the handle is to the front. Just like it should be, in my opinion.
Thanks for reading - Gary.