It’s been many incarnations over the years, but the 17th St. Cafe/Jack’s on Montana/On Montana space at 1610 Montana Ave. in Santa Monica is about to transform again.  The most recent, On Montana will be closing down on July 1st to make way for a brand new Italian restaurant/cheese bar named Formaggio.  Brought to you by the people behind Pecorino in Brentwood, they are hoping for a September 1st opening, but this is Santa Monica after all…