I searched the internet for anyone developing xp2 in b&w chemicals and not much came up.
I had used a roll of xp2 without knowing it was colour process, so i tried to develop with the lc29. Developed a little longer than you would a roll of hp5. It seemed to develop well, but the rapid fixer did not work very well, even after 1 hour of fixing it was still opaque and purple, but this reduced a bit when dried. I think this will lead to some loss of contrast in the print, however I am happy with the overall result.
ignore the top right, negative got damaged