So I've been watching my Charmed DVDs for the millionth time and I was on the episode where Piper and Leo switched powers and it got me wondering if there are any fics out there where Buffy and Spike swap roles. This would mean Buffy becomes a vamp, Spike becomes a Slayer, but it's temporary - walking a mile in each other's shoes so to speak. Does this exist anywhere or should I get to typing finally?

Buffy doesn't become a vampire, but a wish leads to an alternate reality where vampires are good, and humans are bad, so it's sort of what I think you're looking for

An Alternate Attraction by PJ

if not there's some body swap fics if that's what you prefer

Try

Out of the Ashes by Revello_1620

here at TSR

It has Buffy briefly swapping her humanity with Spike's vampirism. It is briefly but it is there, towards the end of the story.

RRaine

Thanks for these, I will check them out!