You will have to hold your phone a little different. I find myself using my fingertips wrapped around the sides touching the silicone to actually hold on to the phone.
Just for reference - at 75MPH on a motorcycle, the phone gets ripped right out of the case. The hard shell has a little scuff on one of the corners. The glass screen cracked and the camera bezel has some minor blemishes. I had a Phantom Skinz screen protector on it before the skid. The road must have ripped it clean off. There was no residue on the cracked screen. Phone still works though. Had the glass replaced.

 

I find that the case is too slippery as well. The phone is just too hard to hold for me. I just don't like the feel of the Commuter case. It's a great case, but just not enough grip for me..

 

I agree.

I had some leftover pieces of some ZAGG screen saver and I cut some strips and put them on the side of the case.

It's perfect now.