Just be careful, the only 1911 I have that has the idiot mark is an AMT, and the idiot mark came with it (not only on the frame, but the slide as well). Now if my Kimber, Colt, or Para had the mark, I dont think it would bother me. If I wanted to keep them pretty I wouldnt carry any of them. As a matter of fact, I'm looking at a used Kimber that has it. I cant afford it at the moment though...
Of course, theyre all stainless. If I had a blued 1911 I would be singing a different tone, blueing is too pretty, an idiot mark would really ruin that.