Phil - If you're willing to put up a couple of grand for a camera with a potentially short life span (if regularly used) or if you tap dance around cameras when using them - go for it. The optics are gorgeous and the camera feels great.
Otherwise I see no real benefit other than the cool factor between this and a Mamiya 7 or Pentax 67 (well, form factor is a huge difference between the Pentax and Plaubel) other than a few minor optical nuances of the Nikkor lenses versus Mamiya's or Pentax's. The Nikkor lens has a long DOF even at the lowest f-stops, which is great for certain types of landscape shots, architectural, street, etc. But with the exception of street, a rangefinder wouldn't be my camera of choice for landscape shots, architectural, or other long exposure shooting.