Both the Caledonian Pipes and Drums of Buffalo, whom I'm learning from now, and Edinboro University of Pennsylvania, my alma mater, wear the Royal Stewart. And I've seen a few other bands in Royal Stewart.

But I've also seen pipers wearing the Earl of St. Andrews, Saffron, Buchanan, Hunting MacLeod, Duncan, Gordon, MacGregor Glengyle, and a few others that I can't handily identify.