You will...the mechanical noise on the assassins isnt TOO bad though...try it and see how you like it...If you dont just mount them normal //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
I never got any noise from my HX2's when I had them inverted. And as long as you have both inverted you do not have to reverse the phase. Give them a try and then switch them if you don't like it. But you will lose some displacement.