Hm, i watched an episode of Dogfights with the swordfish, i didnt see anything spectacular.
i'm thinking it'd stall at a 5% climb...
and with what little armament it does have, IMO
they would be good for anything but torping unprotected TG's, and even then you'd need a couple wingmates to make a deceent dent in their fighting effectivness
and possibly special events, but thatd be suicide for the pilots, as a squad of zeros or Franks would shred um to ribbons...
just my opinion