The carnyx pioneer in Scotland is John Kenny. I've been right next to him playing it indoors in a small hall - it isn't as loud as you might think. And just missed a concert he did with it in Mostar, Bosnia. I think it was intended as a statement about peace, just as you'd expect from an instrument designed to look like a furious drooling bellowing bug-eyed pig.

If you want one there's a maker in France.