All seemed fine until working with the Sony CD-RW drive (CRX-1600L)
and I-tunes.
Shortly after importing the drive un-mounts giving a Firewire disconnected while in use error. The internal superdrive worked fine with the same disk and this is repeatable on my system. (Sent E-letter to Sony RE: Firmware availability for Mac's)

Clone drive mounts and all else seems fine.
PS, My MS WordX files all work properly. (it is not the 2004 version)