Sounds great to me. I don't think I would really freak out, but I'm not sure I could remain as calm as you did.
I can't say I've ever been caught wit my pants down, so to speak. But I did go once with very femm painties knowing that i would be exposed.
But I have shown up with nail polish on. The first time I knew I would be exposed, but I just didn't care. I paid a lot for that pedi and I just wasn't ready to take it off. The second time was a big surprise for me when I got told to take my shoes and socks off.