Hartblei, I have one. The only purpose of this being to create images with tilted focal plane.
Unusable as an architectural shift lens, you might as well use an DSLR with a shift lens, actually the Canon 1DsII with TS-E 24 is probably sharper.
Nice as an effect though.
Really, you can go through this debate a hundred times, but ask anyone who actually does shift photography with an MFDB and there is really only one or two ways to do it with wide angle lenses without going insane.
1) Cambo (expensive)
2) Alpa (even more expensive, but you can safely stand on them).
Ok, or strange one off cameras made by engineers in white coats with 3 customers...
and lenses
3) Schneider (expensive)
4) Rodenstock (stupefyingly expensive)
Making a TS lens that is really sharp for an MF back is like pushing the dialithium crystals further than ever before. 'Ye canna beat the laws 'o' physics cap'n'
Own up. How many professional architectural or interior photographers use a Silvestri. Now how many use its tilt capability. I suspect the answer is a number as broad as its long with a hole in the middle.