I believe they are an invaluable tool to carry in your toolbox. I don't always use every tool, but it is nice to have them available when needed. I have Crimson Trace on my 92FS and on my wife's Bersa Thunder 380. CT doesn't make grips for my Walther P22 but it does have a laser too. I practice mostly with iron sights but also with the laser. When it comes to a life and death situation I want all the advantage I can get at my disposal.