Sorry, santahog I didn't mean to derail your thread.Have you tried some crimson trace laser grips yet?I use them for bowling pin matches.They are awesome! I am assuming you have heard of the Bindon Aiming Concept, where you shoot with both eyes open, and your brain superimposes the two images.Scroll down at this link:http://en.wikipedia.org/wiki/Advanced_Combat_Optical_Gunsight
I read a Gun Tests article about laser sights, CT is supposed to have an on/off switch IIRC, but it is an SOB to manipulate it.That seems to be a fairly common complaint with all pistol lasers, either to small and difficult, or to large and snags.
LaserMAX for the Glock is a guide rod laser. A replacement take down lever is the on/off switch. Push it off center and it is on...back to center for off. Your trigger finger is in position to activate it where it is extended before you put it on the trigger.Turning it back off will take your off hand.Only problem I have had with one is that in a soft holster, the SmartCarry, to be exact, it is possible to turn the Laser on by pressure against the holster.
That's the "Large and snags" category.