I tend to disagree, if he is a bodybuilder. One should not limit the development of other muscles simply because their grip strength cannot keep up. I doubt I'll have the ability to hold 725 ibs without straps, for a set, so does that mean I should not have done 725 half-deadlifts in the rack, even though they did wonders for my back? Use the straps when you need them, and continue to work on yoru grip strength seperately, but don't let it limit the development of the rest of your physique.