A couple more aspects of the add-on, that I forgot to mention.
It overcomes the Missing Tokenzer issue if you try to update a "text" column covered by their FTS facility.
But strangely it doesn't make the MM5 isolation issue go away. ... ie. in MM4 I could make a database alteration while MM5 was open, and the effect was immediately visible. This is not the case with MM5; MM5 has to be closed and re-opened before the change is visible. And the add-on suffers from the same restriction.