I did a quick search of "Swallowtail" on the MDS page (Digital Downloads - My Digital Studio
) and couldn't find any results, but new content is regularly released so you can watch to see if it's released sometime soon.
Personally, I love the stamp and haven't even gotten it yet (it arrives Wednesday). I've seen some amazing things with it that you wouldn't be able to do with a digital image. Check some ideas out here: Pinterest / Search results for stampin up swallowtail