Got an update here on the Flak Jackets. After months of use with Avid V-brakes, these worked great. But recently when I switched to the Avid Mech discs, these things were nothing but a headache. Since the cable is ran differently, it (the housing) has a tighter bend in it where it meets the caliper, and thats the downfall to these apperently. After some friction (just setting the brakes up, NO use at all on them from riding), the coating just becomes gunk, clogging the housing.