BuddyPress.org

thekmen and I have done this with Hybrid as the parent theme and our own child theme built on a Hybrid Child theme and Buddypress. Have a look at http://themehybrid.com/community/topic/hybrid-and-buddypress for the functions that need to move over at least for Hybrid. It was actually quite easy. My post at http://themehybrid.com/community/topic/hybrid-and-buddypress#post-2506 is as close to a step by step as I’ve seen. However, there are still more CSS tweaks needed after following those steps.