I have no firsthand experience with this particular revolver.
That being said, I have plenty of experience with S&W revolvers in general. For the money I would much rather have an M&P semi-auto than this revolver. While mounting a light on a handgun is a good idea, it's kind of hard to do on a revolver. As it is pictured running that light would require you to have your hand way out at the front of the revolver and would put soft gooey flesh near the gap between the cylinder and forcing cone. That is bad mojo. Absent a custom pressure switch for the X300 (or any other weapon light) I don't see how you would be able to safely run that setup.
Red dot optics are nice but they aren't always easy to use on a handgun. The irons are rendered completely useless when you mount a RDS on that revolver. A better solution would probably be a set of CT laser grips for the revolver. Although the lasers aren't very visible in bright light they work superbly in low light and you can always use the irons when available. It doesn't appear to me that the revolver is equipped with any sort of tritium sights, which is another ding against it.
Frankly if someone was seriously considering this revolver I would strongly encourage them to instead buy an M&P pistol that doesn't have all these issues. Revolvers are great for what they are, but frankly they don't lend themselves to mounting lights and optics like most modern semi-autos do. The attempt to give the revolver those capabilities in this instance just seems to highlight the difficulties the platform presents.
My 2 cents.