Even better that slides, is that this can be developed in rodinal, 1:100 one hour stand, rated at iso 200. Always get great results!
I think the consensus is that for best results, C-41 is preferred. But it is great to have standard B/W development as a fall-back option of C-41 is inaccessible. My own results with XP2 have been good, except that the local lab messed up some of my negatives through careless handling. Now that I am setting up C-41 and E6 processing at home, the XP2 will again be very seriously considered. It has amazing latitude, and as Sandy explains, it really comes through in the highlights. I have over-exposed it by two stops, and had no problems getting decent prints (but scans was another story). It is very easy to print from, and does not require any special approach different from printing with silver-based emulsions.
While I wonder about the practical significance for many, I do think that chromogenic films don't possess the archival qualities of silver films. They have one great advantage for scanning, though: ICE works on them, since the dyes are IR transparent, while silver grains are not. While this is not a thread related to scanning per se, this is one consideration more in favour of XP2 for film shooters who then only scan. And to be fair, I think there are many such photographers.