Ask and ye shall receive, apparently - no sooner had I posted a complaint wondering why it was taking so terribly long for one of my purchases to arrive, than it showed up on my doorstep!
I'm a tiny bit disappointed - the chain is much longer than I'd expected, so the cameo doesn't sit quite where I thought it would. I may try adding a jump ring to one of the chain links, so I can wear it shortened as well. Still, it matches a ring I bought a few months back, so I'm very excited. I've never had matching brand accessories before!