Like fschifano, I've never done it, but I have heard of processing C-41 films in B&W developers, with results that aren't likely to be pleasing unless you're after the particular "look" that this combination produces. Note that this requires use of B&W fixer, not a C-41 blix (or bleach and fix); C-41 blix or bleach and fix will wipe out the image developed with a conventional B&W developer, even in a C-41 film -- or that's my understanding. Also, developing a C-41 film in B&W chemistry results in a fairly conventional B&W negative, in that you've got an image formed by silver rather than dyes. In theory, this will be no easier to scan than a conventional B&W film.
All that said, if you want to experiment with XP2 Super and process it yourself, you certainly can. Just get yourself some C-41 chemistry and away you go. It's really not all that much harder than regular B&W processing. The main issue is with keeping everything at 100F rather than the 68F that's more common for B&W developers. With XP2 Super in particular, you needn't be too concerned with color shifts, either. It's likely you'll get a printable negative even if you're sloppy enough that you'd get weird color shifts with a color C-41 film. I have developed C-41 films, including XP2 Super, but I've not experimented enough with XP2 Super's tolerances to know how far you can deviate from the ideal temperature, development time, etc., and still get good results.
