Jason,
Thanks for posting the pics. When I've done this before it's been without jigs. The door holes were drilled on a drill press and the hinges attached to the cabinets by holding the doors in place with a small spacer whilst fixing. It certainly works, but I suspect only really due to the marvelous adjustability of these kinds of hinges.
The doors were made along the lines of some wardrobe doors you described some time ago. Excellent results for something so remarkably straight forward.
Cheers,
Dod