This is what I've read, and been told, so it could be wrong.
Rearward facing is supposed to give more bite under braking, but it is harsher on the pads.
Forward facing aids better cooling.
However, I'd probably be inclined to say that you'd not really notice any difference in performance, except that maybe rearward facing would cause more vibrations? I'm unsure, but nothing wrong with how you have it set up.