I had the opportunity to fire my new R9s this weekend.
First, the recoil was sharp, but not too bad other than the trigger guard hitting my trigger finger. Accuracy was quite good for a pistol of this size.
Was able to put 70 rounds through the pistol. The only failures, and they were numerous, were light primer strikes rusulting in failure to fire with S&B 115 gr FMJ ammo. I have never had a problem with this ammo in numerous 9mm and .45 pistols, but the primers must be too hard for the R9 ignition system.
The gun did shoot Speer 124 gr Gold Dots and some Federal FMJ without problems.
I put some grip tape on it prior to shooting, and I feel that this really helps with the controllability of the pistol.