This is starting to look really nice now. It's definitely time to buy a new photo printer, especially since I've just got a new camera.
christ: Yes, one of the features of Printers+ is that it allows external configuration applications to be launched for the printers. I haven't seen anything make use of this yet though. It certainly makes sense for Martin to be supporting at least all the current versions of the Printers front-end though (1.64a, 1.67 and 1.91) as he seems to be doing.