Tam makes a very good point about the utility of Lasermax guide rods on defensive firearms.
I’d imagine a real-life incident with my Glock would have run something like:
Oh, wait… *click*" …and on comes the laser.
Now some would say you don’t have that problem with Crimson Trace Grips and they are right. However, for me I have found another problem. My trigger finger blocks the laser. Not that I would have bought them anyway. In some cases they cost more than I paid for the gun. But if they work for you, go for it!