Share 'Wallaby portable "dockable" Mac 1980's'

Has anyone ever heard of the Wallaby portable Mac from the late 1980's? I found a magazine article about it in the October 1989 edition of Personal Computer World, (UK magazine), and was wondering if anyone was familiar with the machine. Basically it is a laptop computer that attaches to a Mac Plus or SE as a peripheral. The user has to take the ROMs from the desktop machine and stick them in ...