Congratulations on wearing the kilt to work. It is great to hear that your manager was open and accepting. I am in the same position on both a welcoming environment for kilt wearing at work and the no cameras rule.

The whole key is to dress professionally (I am better dressed than 99% of the other men at work) and you did that. It puts both you and the kilt in a better light. Watch out if you wear them frequently you may have the experience where women complain when you don't wear them!!