i havent used it yet, but the key word being yet. every import house i call warned me over and over that it is not a streetable setup. youll have to run your idle way up to at least 1800, anything below 6000 is just goin to piss you off, and stop-n-go traffic is impossible. personally i cant wait for the day i drop those in and take a state line road trip so i can open them up and see what i can do. but even me, race ready rider, suggest having a daily driver because those cams would ruin your engine if driven daily.
but hey, they're bad ass huh? needle bearing roller rockers made out of aluminum-magnesium for even higher rpm's then 7000 series cnc'ed aluminum. jesus was lookin down upon Ferrea when they designed those roller rockers.
but if im not mistaken, mugen makes an aluminum roller setup that doesnt lock out vtec so you could run a domino type cam, make loads of top end power and only have to run your idle up to 1400-1500. or you could just run a more mild cam profile, sacrifice a little hp for practical daily driving and an idle that stays below 1100. and this is the one time i would suggest mugen peices, well they have cheap thermo peices that will help you gain a few xtra ponies.