Update: I gave radeonpro a try exactly like what was posted and there is Success! Not a single instance of screen tearing in about the hour I played. The camera seems a little more "rough" and I might catch a jittery frame every now and then (which would be the game actually *waiting* to finish drawing the frame before displaying the next), but thats generally how vsync works anyway.

Props to the person who suggested radeonpro. Now if only someone could figure out the awful camera stuttering when walking up/down slopes like its getting caught on everything.