I have shot one, and it is one of the most accurate semi-autos I've ever shot: ragged 5 shot hole off hand at 25 feet. However, the trigger is horrible. You have to learn to stage it between shots, or it is way, way too long a pull. Also, there is too much (in my opinion) "stuff" on it, i.e. chamber indicator and decocker and the mag release is not in a comfortable place.
I spoke with a Smith & Wesson rep about them and he admitted they were designed for law enforcement, and S&W suggests that if you shoot this gun, it should be the only one you shoot because it is so different than most semis you need to be second nature with these differences.
Finally, the one I shot, the guy is getting rid of it after just a couple of months - he hates it.