Switching from Phpbb to vBulletin
I currently have a large forum running PHPBB. I currently use ReviewPost with this site. I'm considering adding both PhotoPost and your classifieds applications to this website. HOWEVER, I'm also considering a move from PHPBB to vBulletin sometime later.
Obviously, it would be great to change to vBB and THEN install PhotoPost and Classifieds. But I'd like to do this the other way around. Install PhotoPost and Classifeds integrating them with PHPBB. Then in a few months make the switch to vBB.
Are there any big problems in changing the integration with a forum application after the fact like this?