One thing that I've learned is that the old school trainers and the gun game-players are stuck in their own world of laser sight denial. They just don't get it. They're good because they've trained with hundreds of thousands of rounds downrange....but, who cares!
In the real world ninety nine percent (99%) of handgun owners have that gun 'strictly' for self-defense.
They barely practice, they don't play gun games and handguns are not in their realm of recreation. Many are aged or are physically challenged, have poor eyesight, need bi/tri focal glasses. Some are handicapped, obese, frail, bedridden, live alone, etc.
Advanced training is nearly non-existent for these folks. But, they can train themselves and perfect their aiming by unlimited dry-fire practice in their home with a lasergrip.
Nearly everyone can instinctively point shoot at close range if necessary. And fortunately, nearly everyone can lay a laser dot on a threat and press a trigger.....from just about 'any' position without using sights.
Most defensive shootings occur at very close range and under great stress.
In a real self defense situation everyone will focus on the threat, thereby verifying that threat. With a lasergrip sighting system they can pinpoint the POI on the threat while looking at that threat....and especially so in low light and darkness where 80% of encounters occur.
Below is an excellent laser equipped setup for the barely trained self defense shooter.