I don't see most real racers using discs on road bikes, maybe a wet day, and mountain option. For cyclo bikes it could be the coming thing. And for touring bikes it isn't silly. Personally, I would mount the front one only for road uses. Rear braking power is really not that dependant on it being a disc or not. Mounting on the front fork and using a commercial fork makes a lot of sense weight, stopping power, and liability wise. Not my fork, for the most part. On tandem weight set ups I prefer a set of cantis or pedersens, + a disc up front.