I'm afraid I'm not sure sinse I've only ever used orphius along with supernova and it's licensing and activation has always been the same as Supernovas.
I'd be interested to know what Orphius version 3 voices are like sinse after Dolphin sold the development writes to Meridian, Meridian now have version 3 out, though I'm still using the v2 human voices (I'm using Alan right now).
I've always found Orphius (at least with it's human voices), the best compromise between understandability and fast reaction speed, indeed after using Realspeak Vocalize for a while I only just realized that I was having to type slower to get realspeak to actually speak what I wrote more efficiently than I'd need to with Orphius.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)