Oldman (but wise man) says:
S&W also makes some ugly guns, in part to people thinking black plastic gun ownership makes them SWAT or tactical guns and creates a market. Thankfully most of their guns are still beautiful works of art with fine tooling. S&W is picking up a good number of agencies to supply sidearms and that number is growing.
+1
In fact, black guns are not necessarily smarter from a concealment standpoint.
There are few black objects in nature. Snipers for years have been painting their guns in earth tones. Smart gun makers, like FN (parent company of Browning) are turning out more and more of their military guns in brown earth colors.
While this has little to do with what guns LE officers use, it does point out how ridiculous some of the current "tactical" craze has gotten, and how some shooters really look like posers instead of Sportsmen.
For Home Defense, I use what is on hand- either a Stainless or Blackened metal S&W pistol, or one of my hunting shotguns with good old blued metal. There's nothing inherently wrong with a good synthetic stocked shotgun or for that matter pistol, but definitely nothing superior to them either.
If I was going to get a polymer framed pistol, it would most likely be a Walther PPS, because it is very slim, well made, and nice ergonomically, or i'd be looking at the FN's. Well made, available in earth tones, and with classic and proven features including hammers and lanyard rings.