I bet Av'Roo gets that question all the time, given that the Aurelians and Skorrs look almost identical. Seems like he's very used to handling that tactfully, and possibly doesn't even mind.
I agree that the Federation captain seems very suspicious and distrustful, and it's hard to tell if it's based on anything, or just bigotry.
I am definitely going to be interested to see the reaction to Kapoor...especially Jeto. I hope nobody ends up coming to blows, since I'm sure Kapoor is capable as any "Cardassian" officer, but I don't see her as a natural fighter.