Both of my 1911's are SA "Loaded" models with extended ambi's. I intend on switching the Micro that I carry to a standard, single-side model. I have accidentally snicked it off a couple of times re-holstering. I don't see the need for them, really, unless you're a lefty, but I don't mind it on my Gov't model. (I don't carry the 5" gun) I still would have bought it with a standard style safety. Definitely one thing I wouldn't have added to a project gun but it's OK with me that the loaded model came with it.