I got it working on mine. I purged all nvidia files and did a command line reintall again, had it save the xconf, restarted, and then opened the compiz fusion icon and made sure it was on "Compiz", then reloaded the file manager.
sudo apt-get remove --purge nvidia*
sudo apt-get install nvidia-current
(saved xorg config here, said default device was not a valid field)
(had seen that this problem had once in the past been caused by grub booting the wrong kernel)
(checked against the new grub file)
and then restarted and ran the "Compiz Fusion Icon" from applications->system tools
in the icon that appeared in the taskbar, i clicked and checked it was on compiz, then had it restart the file manager. It reloaded into Unity, with the side bar, and compiz effects working perfectly. I haven't restarted or anything to see how it works, but at worst I know I can get it to run more than likely by putting the command to reload the manager at startup.