Other Thoughts ....
Weapon Lights
I don't like weapon mounted lights on my carry handgun unless you're also carrying a hand-carried tactical flashlight. I've carried quite a few "EDC" guns with a Streamlight TLR-1 mounted on it, and found that I don't like using my gun as a 'flash light'. When a noise in the middle of the night registers low on the threat meter (not breaking glass ... more like a "bump") going around looking for the source with the gun / light on can create a problem if you discover it was just your neighbor, mother-in-law, etc. The sight of having a gun with a blinding light pointed at them WILL create animosity. Especially if your neighbor is a law enforcement officer getting home late because of a "critical incident". Ask me how I know ...
Anyway, weapon lights are great and all "urban fighting guns" should have them. HOWEVER, using a handheld light for "navigation" or "investigation" is advisable. I carry a Streamlight ProTac 2L clipped in my off hand front pocket for such use.
My system is now:
No lights on my carry handguns.
Tactical light clipped in front off-hand pocket with my folding knife.
Lights on "bedside guns".
Knives
This is bladeforums! I EDC a Paramilitary 2 clipped in my front off-hand pocket. If my wardrobe allows, I'll on-body carry my Busse Active Duty BG in a mashed cat sheath.
First Aid
If you carry a gun you're worried about your safety.
I EDC a Maxpedition Jumbo. It is sitting beside the bed as I type this message. It'll go with me to the kitchen, living room, and when I leave the house (except for when I walk / jog). I usually leave it in my car when I'm going to work / store / etc however ... its there within arms reach most of the time.
The Jumbo is my "level one survival kit". The bag has basic survival supplies (small water filter, water purification tablets, Busse knife, cordage, space blanket, compass, flash light, ammo, spare mags for my CCW gun, fire starting equipment, etc). It also contains a basic trauma kit which is more germane to this thread.
The top flap of a Jumbo has a big "sunglasses pouch" sown onto it. In that pouch (which is the most easily accessible spot on the Jumbo) I carry a trauma kit that includes:
North American Rescue CAT (Combat Application Tourniquet)
Medium Israeli Compression Bandage
Quick Clot Combat Hemostatic
Duct Tape
Gloves
Aspirin (I'm middle aged ... heart attacks happen especially after the stress of a shooting incident)
Nasopharyngeal Airway with Lube
Nothing else will fit or I'd add a Chest Seal, more tape and a few H&H compressed gauze.
I've added a Maxped "Janis" pouch inline with the shoulder strap. This little pouch is my "mini-survival kit" that can be easily detached and stuffed in a pocket. Inside the Janis is another hemostatic ... QuickClot Sport Sponge as well as more duct tape, and a few otehr items that could be pressed into trauma duty:
Spyderco Delica4
95 and 325 paracord (this is thinner versions of the famous 550 cord)
Adhesive bandages
"Non-threatening emergency meds" (lopermide, Benedryl ... this antihistamine will help counteract allergic reactions to insect stings, etc), and so forth).
The point being ...
If you're carrying a gun you may want to consider what happens if you end up with an extra hole in you too.