We run eDir and AD and use IDM to Sync them. No problems. If all you want
to do is sync eDir to AD you could just use the DirXML starter pack in NW
6.5. Or you could just run them side by side and let the NW Client sync the
passwords for you. Though that leaves a bigger chance that the user will
get them out of sync. Any you go about it though, there is no reason that
you can't run both eDir and AD.