I've flown with pipes and kilt across the country quite a few times.

I have big feet, and I travel light, with just one rolling carryon.

Since a pair of size 14 shoes takes up around a third of my suitcase I almost always travel with just the shoes on my feet.

I've had no trouble fitting kilt, sporran, hose, waistcoat, bonnet, and pipes in my suitcase. The bulkiest thing (besides the shoes) is the jacket which I leave behind.

I have plain black Doc Martens which, like Dr Ian Malcolm's black suits, are appropriate for all occasions.