Quote ="Cowgirl Nostalgist"Isn't that like re-arranging deckchairs on the Titanic?'"
Not really.
Compare Duckworth's right wing stats (tackles missed, metres gained, etc.) with his left wing numbers.
Do the same for Jordan Atkins, incidentally. Another right winger who has looked like a fish out of water when played on the left but has been excellent on the right.
If this was simply rearranging deckchairs, you'd find no discernible difference in performance. But you do.
Making the switch isn't straightforward as you're reading play unfold in precisely the opposite way you've got used to. Plenty manage it, of course, but it's not an experiment worth undertaking when the rest of the backline is also an experiment!