It never hurts to try, except your pocket book. I had Hogue grips on my Security Six, and while they were tacky and easy to shoot they also made it much more bulky. Factory grips on Rugers are made by either Hogue or Altamont, depending on the model.
The factory Wiley Clapp grips are made by Altamont, and IMO a very good blend of concealability and recoil control. You can't get the finger groove inserts as those are a TALO exclusive, but you can choose several different styles of wood inserts. I think the snake skin looks nice, myself.
http://www.altamontco.com/experiment...uger_gp100.php
Hogue makes the OEM grip for the Match Champion, which is bulkier but feels fills the hands well. I also think its a bit more natural to point with. They do leave a bit of a gap between the frame below the hammer and the grip, though, so if that aesthetic irritates you just be warned.
http://shopruger.com/Ruger-GP100-Mat...uctinfo/19944/
Lett Manufacturing has been out of business for many years now, but they used to be the OEM supplier for Ruger grips. You'll have to sniff around ebay, Gunbroker, etc. to find either used or NOS if you want Lett grips.