Mr. Engstrom has obviously never heard of Kimber's Crimson Trace grips, nor has he had an iota of tactical pistol training utilizing any light source.
I have had the laser grips on two sidearms. Found them to be less than optimum. Good, but not great. Weapon could be drawn/picked up hurriedly, with less than best grip, and laser would not illuminate.
Same thing holds true with the backstrap grip safety. What if I needed the weapon, but could not get best grip in the heat of the moment? I agree with the author, a night sight works best for me.