Hi, all,
I recall that the custom floppy format used by Swyft and the Cat was
one of the reasons why emulation was difficult.
Guerrilla archivist Jason Scott has set up the Internet Archive with
one of these:
http://www.kryoflux.com/
It appears to be able to save preservation-quality raw bitstreams,
rather than requiring an image format (I guess like a dd of a floppy),
and he's at the IA (San Francisco) for a few days if anyone would like
to get in touch with him to preserve a copy of Swyftware or other
Canon Cat diskettes.
http://ascii.textfiles.com/ has his contact information.
Vitorio