I've had my 315Ng since Sept. '08, and have put close to 3000 rounds through it. Like all S&W's, the action gets better as you shoot it. I dumped the stock grips for it and got some ebony grip panels for it, as the rubber grrips get in the way of the speedloaders. The sights are a thing of beauty, and are very easy to use. It is very accurate at 25 yards thanks to a slick SA, and the DA is great, too. Out here in the Nv desert I appreciate its light weight on long hikes in the heat, and despite it's "snubby" appearance, it performs just as a 4 inch barrel does (I've never shot any loads that weren't +P's through it). Mine loves 158 gr bullets, and I've loaded up and down several different powders to get the best results for her.
As long as I stay in the low desert where there isn't much dangerous game, this is what I have (cross draw) with me. I load 2 rounds of shot in it for Mojave Green's when they appear, as they are neurotoxic and I don't want me or the dogs nicked by one of those, and the rest of the 158's are available for whatever else drops in on us.
I realise that some shooters are put off by the scandium, or the IL, or just the fact that its a newer S&W, and that's fine. Just consider that this type of gun has never been offered before by S&W with this combination of good stuff! I've been shooting S&W's for over 30 years since I bought my first at age 14, and this is as close to having one personally made for me as it gets! I love this K frame, and it has far exceeded my expectations for a dusty carry gun. Oh, and don't let anyone pull the "carried often, shot little" cliche on you- it'll keep shooting +P's for a long time to come!