Aw, I'm tremendously flattered! I will give the caveat that the story kind of just... stops. My muse ran out of steam and I have never managed to write anything resembling an ending. Perhaps sometime I will get re-inspired.
They're absolutely not Top and Bottom. *g* How boring. (IMNSHO.) Psychologically I think it would be lonely to always be the one in charge, as it were, or always be the dependent one. If that makes sense.
And of course you're welcome to save it, as long as you don't repost it somewhere; if you save it on your own computer or something that's fine by me.