I was at The Place To Shoot in Portland, OR yesterday and shot my G26 side by side with the Smith & Wesson M&P SHIELD™ 9mm. It was really weird shooting a single stack gun. I didn't like it. But I shot the M&P just as well as my G26. Or just as poorly as the case may be. The thin profile didn't seem to affect my aim. I had a had time feeling where I should put my thumbs. The G26 has the slide lock recess which is a natural reference for my thumbs.