i have an orthodox stance and i rely mostly on my left hook, but not in terms of power, rather in terms of speed. if i changed stances i think i'd get fucked up pretty bad since my right isn't as fast as my left. its heavier, but slower. i just do the usual setting up my powershots with my left and firing the actual powershots with my right. when someone bullrushes on me, i just sidestep to the left and throw the left hook, you get the fuck out of the way and they usually nail themselves on the fist.
im sure your way works just as well, its just a matter of preference. if you can do it both, so much better since you can adapt to any kind of an opponent. depends on what you're doing too, in a boxing match i think you'd be in trouble, in an mma fight it might suite you better.