I agree with most of what the writer says, except ....

The gun safe system works great for keeping the kids away from the gun, but slows you down during a home invasion. So does a keyed or combo trigger lock. We've used an old-style manual trigger lock that our kids couldn't defeat when they were young, but even that slows you down when seconds could mean life or death. It was worth it in case our kids forgot the rules, but home invaders are not going to wait while you release your gun from captivity. They're going to kill you while you fiddle with the lock.

It really comes down to this. In a home invasion situation, be it a burglar creeping through the livingroom or someone kicking in your door, a gun is only useful if it is loaded and accessible. All these other scenarios presuppose that you will have time to get past the locks and load the gun. You won't. 

https://www.gunowners.org/sk0404.htm