I believe you are asking about a Safari Arms frame, of which is now Olympic Arms. The frame is cast with that triggerguard, fingergroove, and raised checkering.
I haven't found a 1911 I didn't like. Some I've liked better than others though. I don't own any really top end 1911's. Of those I do own the Kimber ultra carry II and the Ruger SR1911 are my favorites.
if memory serves me right, a lot of people didnt like the grip frame, and ended up grinding off that finger grove/grip enhancer/blister maker what ever you call it.
Um..... call me crazy, I don't like it. Slick grips? Finger groove for aiding in control, never thought any 1911 I've ever owned or shot was uncontrollable! Looks like something out of a video game.