FWIW, some like em and some don't. I have two Governments and one 1991 Compact and have extended slide stops on all three. Haven't had a problem with any. Wilson makes two different styles, one has a narrow pedal and the other is wide. Have tried them both and prefer the narrow style because it doesn't cause a holster fit problem. Advantage? Not much except a friend of mine had a loose plunger tube and the extended stop kept it in place. I do like the fact that I can drop the slide on a fresh magazine one handed. Its kind of like having a FLGR-I don't see any particular advantage to it, but it hasn't hurt anything except to make teardowns a bit different. Something to watch-if you use a high thumb hold, you may bump the slide stop in recoil and lock back prematurely. I use Pach wraparound Signature grips with a thumb rest on both sides, so my thumb is about even with the top grip screw.
[This message has been edited by dnancarr (edited 08-11-2001).]