Well, they are played by inflating a 'bag', and have drones, for skirling, so would count as bagpipes for the purposes of the Challenge. Still, it's the Highland stuff that causes umbrage, mostly. The softer, more lilting notes of other forms are not so hard on the lugs. I'd also put the kibosh on other pipes, of the Brittany biniou and bombarde ilk, as being unfit for human consumption. The penance for transgression of these 'suggestions' have yet to be formalised, as there have, to date, been none daft enough to really risk it, but there is, perhaps, far more menace in the unknown than if penalties were to be clearly stated. I doubt, though, there'd be any repeating of the transgression; it takes quite a while for the lesions to heal.