My wife and I will be taking our first cruise in a couple of weeks. I'm planning to wear a kilt (w/Argyle jacket, Ghillie Brogues, fur sporran...) to the formal night. My question is whether a skean dubh will be accepted or trouble? I do have a bottle opener skean dubh but it's informal and would rather have the jewel of my formal piece peeking out. Anyone been there?