How should you select a shoulder or gear bag? Nearly every gear company has a backpack, slinger-type bag, or shoulder bag in all configurations. Personally, I carry a shoulder sling pack. Nearly every company and cop shop has a messenger shoulder-type gear bag available today in a variety of sizes and carry styles. Many are designed for concealed carry with built-in holster compartments. This is what I carry more and more every day.
Here's my rationale to support this. If I'm off duty and stumble into an evolving event, I'm going to need more than a piece of metal and handgun. Some of these bags reek "cop," so here's a suggestion from a tactical operator colleague. Get a sports team's logo or some designer logo, and put it on the outside of the bag for public view.
Look at the variety of colors that some bags offer; not all of the world wears SWAT black all the time. If a thug checks out your appearance, and observes this could be some designer special, they won't think "cop." It's all about blending in.
So what is in my carry bag? Along with the handgun, it should include:
Two magazines of good quality ammo
Official credentials case with extra business cards
Notebook with pen
Handcuffs (flex cuffs cut down on weight)
High-intensity flashlight
Cell phone
Quality police utility knife
"DSM" identify banner
Hemostatic agent dressing
Combat dressing (Army surplus — Hooah!)
Tourniquet
Two pair, latex gloves
A few adhesive bandages for nicks and scrapes
Police radio (if in your jurisdiction)
What else could I carry? The list could go on and on. A few others add these items to their bags:
OC Spray
Electro-Muscular Disruption (EMD) device
More ammo than me!
CPR mask
Duct tape (handcuff alternative)
Multi-tool pliers instead of a utility knife
Tips for your "go bag." Safety and security is the utmost here. Some find it worrisome that their weapon isn't surgically attached to their hip. Many bags have great adjustments in the sling to get the bag in the right position.
Also examine the bag for loops to run your trouser belt through. Some offer additional straps to wrap around the waist for added security. What is important here is to rethink off-duty carry with this system. Normal casual movements with a bag could be awkward, so practice this until you're not uneasy with it.
Then head to the range and practice deploying the weapon from the bag and firing. Also, practice reload and failure drills with the new system. The world we police live in is not for the faint of heart; you must be ready to take the fight to them.