Aside from texture of course , the open-backstrap Pachmayr Gripper Pro feel just like a Hogue hardwood , which I have on more than a few of my guns.
However , if I had to carry my gun out in the open , on a belt , getting in and out of a car 24 times a day where a wooden grip would get damaged , or for use in a situation where my hands were likely to sweat , like a cop , I'd use the Pachmayr.
In fact , I used a Gripper Pro on my K-38 for matches.