What kind of service do Bock provide? It seems like so many pen makers use Bock nibs, yet so many reviews also comment of the various properties of company specific features like the "conway stewart", or "Visconti" feel of a nib. Surely, nib material aside; Bock made nibs must be fairly similar to each other?! That is unless of course, that Bock provide some kind of consulting process in which the pen maker brings what they want, which Bock then go on to manufacture. Any thoughts or insights?