Good luck. Even though the Swift is expensive--supposedly because of the titanium frame, not the leather--replacing the leather would cost as much as a new unit, what with shipping, removing the old leather and rivets, cleaning, inspecting and repairing the frame and replacing and re-riveting a new leather. And even if it could be done, it wouldn't be as warrantable as an all-new product.
I doubt they would do it; the volume wouldn't make having a craftsman assigned do that kind of work worthwhile.