I use 12-strings for blues - a Martin DM12 and a Washburn EA20-12. Both mellower than a Stella, but easier to play - every Stella 12 I have come across has had an action akin to a double bass and intonation that was way out! Perhaps I've been unlucky.I've owned several 12s over the years, the first was an Eko with an ebony neck, nice to play, but seriously unbalanced when playing standing up. A pal of mine has an old Gibson B45-12 which I covet but from which he will not be parted.
Reaction when I play my interpretation of the Leadbelly version of "House of the Rising Sun", "Black Girl" or "Gallows Pole" is amazingly positive.
Currently working on "Bourgeois Blues", based on the Ry Cooder version.
Alan