Optica was one of those Great Ideas In Theory that didn't translate into a Compelling Idea In Practice. I think the later Seabird Seeker, as well as the Partenavia Observer, demonstrated that whilst it seemed attractive to have an aircraft with the visibility of a helicopter but running costs of an aeroplane, in practice potential operators either preferred the versatility of a helicopter ( private companies ) or didn't give a fig about the running costs ( police & military forces ).