Congratulations, reasonable progress and I wish you well in wearing your kilt to work on these special days. You mention that the two ladies at the interview wore pant suits, presumably they are not allowed to choose to wear skirts every day in the same way as you are not allowed to opt for a kilt. It is a good result, being a win/win for everybody that you now have their agreement that you can wear your kilt to work on a few occasions, rather than having to take them through an employment tribunal and force the issue.