Interesting.
Personally, I keep my 3913 under the pillow every night. I also wake up in the exact position I went to sleep in every morning. I live by myself (well, with my dog, but he has his own bed), so I don't have to worry about anyone else messing with it at night. Chambered, Safety off, but a long, heavy double action pull. I don't have any interest in using a striker fired gun. I'd use my revolver, but the 3913 is the flattest, thinnest gun I own.
I'm intrigued by the comments of that being "the first place a burglar will look." I don't store my handgun under my pillow, I generally keep it on my belt until bedtime. When I get up, it goes back on my belt. If someone wants to look under my pillow first, they're gonna have a pretty hard time not waking me up in the process. However, I don't doubt they could probably stop you from getting to a gun sandwiched between the mattress and box spring.
I consider this to be a tactically sound location, IF you're of the variety that doesn't toss and turn/sleepwalk, and IF you're sleeping alone. I wouldn't do it with someone else in the bed.
About 5 years ago, my Grandad was sleeping in his guest room one night (Grandma's snoring got to him
) and awoke to realize that a burglar was rifling through the nightstand just 2 feet away from him. Had his pistol been in the nightstand, the burglar would have had it, not Grandad. As it was, it was in the nightstand in the master bedroom. (not very useful.) Grandad hollered, and the guy took off. Kinda scary, because he's NOT a heavy sleeper. Had the gun been under the pillow, he'd have had it in hand before the BG knew he was even awake. Luckily, Grandad's encounter ended with just a few minor losses, mainly jewelry.
I don't anticipate anyone making it into my bedroom undetected, because I'm a very light sleeper, and I have a rather territorial dog that's an even lighter sleeper. Interestingly, just last night, I was awakened at about 3am by a pounding on my door. My pistol came out from under the bed, and the dog only beat me to the door by a couple of feet. (He's one of those awesome dogs that you never hear a sound out of, so when you do, you'd best listen.)
Couldn't see a thing through the peephole (not normal), so I waited off to the side of the door. When it came again, I opened the door with the security bar still engaged, which only allows about 2 inches of travel. A rather dark complected young gentleman wished to inquire as to whether
mumble mumble was home. I politely informed him he had the wrong apartment, with my pistol just out of view behind the doorjamb. He elected to leave.