The only real reason to resist discs is the thought of 1000 bikes on a course all squealing their brakes and me having to hear it.

Triathletes as a general population do not understand the word "maintenance". Bent rotors, dirty/oily rotor, dirty pads etc. will be the norm. oh jeez, I'm cringing just thinking about it. Nothing pisses me off more than getting rotor squeal on the tail.