I just put a set of Hogue grips on my P89 it makes the ruger feel like a different gun. I'm really digging the new feel. It provides a fatter, more comfortable feel. It also gives me more control over the pistol.
When I purchased my P90 at the gun show in 1993, I brought it home and installed a Hogue rubber grip. The gun and grip have both been great. And a Hogue stock on my Mini 14 really changed the feel of that gun.
I have the same grips on my P89, and i agree makes it feel like a different gun. My p-89 was one of my first hand guns, and of all the guns that have come and gone since i just can't bring myself to get rid of it. Feeds anything i put through it and still looks like brand new.