This was kindly sent to me, not by any of the authors: You are not allowed to view links. Register or Login to view.. (Link to PDF is included).

Tavi may want to add this to the list, as a 'vernacular Italian solution'.

It has a number of the usual issues: inconsistency, no examples of meaningful plaintext, and it cannot work as it is just another simple substitution.

It's already been added to the list [Italian (Shorthand) by Gino C. and Agnese F.] and discussed here: You are not allowed to view links. Register or Login to view.

Ah thanks, I had not associated the two with each other, as the discussion has been so much on shorthand.
This topic can certainly be closed here.