The other day i was building a 29'er with mechanical disc brakes and i naturally put the skewer with the handle on the left side with the disc brake. iv always done this cuz well on every other bike thats how it goes and cuz an other mechanic who's also a mountain biker puts his front skewer on that side and thats what an old head mechanic taught me. but then my boss gave me crap and told me to put the handle on the right side cuz it gets in the way of the brake. Is there a necessary way to put on a skewer on a mountain bike with disc brakes? as you can tell im not an avid mountain biker