I have done nothing special on either my '08 or '10 GSA's. I just give the new pads a quick squirt of cleaner to remove any manufacturing debris, install and go...OK, the first time I brake, I do so from moderate speed increasing the brake pressure to make sure there are no issues, other than that nothing. Also, I do not know of ANY manufacturer that reccommends you "scruff" the disk when you change the pads, if you think about it, what are you trying to accomplish? If you have overheated your rotors, replace them, "scruffing" will do nothing for you.
Oh yea, be sure you pump the lever a few times after you change them to prevent the "oh shit" feeling when you try to stop.