I haven't been very impressed with laser sights. I have tried them on home-protection handguns and 1) you have to remember to turn them on in a tense situation and 2) they give away your position. Seems to me to be like racking a pump shotgun - more for effect on the person on the wrong end than anything else. If I'm protecting my home, my goal is not to scare you.
YMMV
I've removed the laser sights from all my handguns except a BB pistol.