these threads are always interesting. I actually prefer Pachmayr grippers except for when it comes to the GP100. With that model I have discovered that I like the older style rubber factory grips. I purchased a brand new 4" GP100 last December and replaced the Houge grips with the Altamont grips. I opted for the faux ivory panels just because. Oh by the way I have the 2005 Ruger catalog and the photos of the GP100 and SP101 still showed them with the older style factory grips. So it was sometime after 2005.