I love them. Back in the 1980's, I ran down to a Tucson gunstore to pick up one of the first 3rd gen ones that hit town.
It was mis-stamped 659...which happened to a bunch of the first ones off the line. I traded it off like dummy....but since replaced it, just a bit newer vintage (black/MIM hammer & trigger).
Currently, my only Smith auto's are a 5906, 659 and a 4006. ALL stainless and built like a tank.
Not ccw piece's, but I have plenty of others to cover that.