Just back -- it went well, I think! Hopefully, they do too.
It's a part-time, on-call position, but apparently, that's how they do their hiring. If the client likes you, you're in. If that doesn't work, they'll try you in a different spot. They said it's very busy and they're always looking for good people.
They said something 2-3 times that I'm hoping is a good sign -- they meant to call me last week, but were so busy, they didn't have time to. I'm glad they didn't! If they had called Tuesday, Wednesday or Thursday, I'd have told them 'thanks, I have a job!'