I'm not a gun smith, but have you thought about the smithless mount that way you can put it back to original if you don't like it?
By the way, I love the way it looks. Everyone is always saying that we need to look at our weapons as tools, in my opinion, you are just making your tool more effective and user friendly. I've actually been considering putting the same dot on my S&W 629, but haven't been able to find much in the way of reviews on the fastfire as to if it can hold up to the .44mag.
Let us know what you decide to do.