I've carried my Kahr CM9 for almost a year IWB at 1 or 4 o'clock. Fit & finish is superb for a great price. With the Pearce grip extension on the factory mag, I can easily get a full-fingered grip on it. Out of the box, the slide hesitated some when manually cycling it with a full mag, but no more. I have no direct experience with the Beretta nor the Sig.