If you like a Miculek style, high and tight hold like I do, you'll find it annoying. I dremeled the shit out of mine. Same with me on the buckmark. The only way to shoot that pistol is incorrectly.
It's still a pain in the ass when it digs into your thumb, or it's inadvertantly put "on safe" when firing. My life isn't in danger, but it's freaking annoying and unnecessary.
My biggest complaint(s):
Sights. I freaking hate fiber optic sights, especially big ones.
The safety. You should move the lever up (and out of the way of your high riding thumb) to put it on fire, not down for fire. It's in the way.
No, now don't say that. You'll set yourself up for failure. Just figure out how long you want to stay in S&W, and watch the appropriate charts. You'll do just fine.