While I've no experience with the 45mm Super-Rotator, I'd been curious about it, too.
The specs at www.hartblei.com
show a close flocus of 0.35m, or about 14 inches, and a horizonal field-of-view of 83 degress, which would be about 64 degrees on a P30. So, at minimum distance, an average dinner plate would fill or slighty exceed the long dimension of your frame.
Hartblei are pretty candid with their resolution test results, which indicate the need to stop down to f16 for decent sharpness at the center, becoming passable 8mm out and marginal 19mm out.
Some sample images that people have posted show considerable fringing. But I haven't seen enough samples, let alone from enough photographers nor under enough conditions, to draw any honest conclusion.
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Anyone have any experience using Pentax 67 wides with the Zoerk Pro Shift Adaptor on a Contax with a P30, P45, or e75? Or know of some other alternative?