Well there is always a correct and not so correct way to do anything i guess........Bolts that have tensile and shear loads should have a shank on them, thus acting like dowels........Ok yes your threaded "Set screw" type bolts might survive years with no trouble........But some folk have a tendency to ignore most all things, and this can result in things coming loose........The folk who's bikes tend to break down on a rally.......There are Mechanic's and then there are "Mechanics".........every one makes their own choice........Instead of getting a dozen differing opinions from experts in magazines or forums, it is always best practice to simply look at how the factory did it........They spend far more time and effort to get something right, than someone who simply wants an easy and/or cheap fix........Or a tool box full of imperial and METRIC spanners.......Yes, cause there's so much room in there....... To each his own....... I say.