For those that's currently using shoulder holster for CCW, what do you think of them? Are they comfortable to wear? Do they provide good concealability? What's the pro and con? They looked like they can go loose when you run with it??
As with any style of carry, the shoulder holster has it's place, depending on your circumstances and the weapon you wish to carry.
Comfort; The wider the strap, the more comfortable. A narrow strap can become annoying after a while, especially with a heavier pistol. With a OWB rig you can at times forget you have gun on you, but with a shoulder holster it is "felt" constantly. A quality, well fitted holster is required for comfort.
Concealability; They are as concealable as any other method, and that depends on your cover, not the holster. The larger the gun the more they print, as with any other holster.
Pro; A shoulder holster is more comfortable when my back is acting up and I don't want to wear a belt.
It's easier to go to the "can"
You can if you wish carry a
lot of ammo on a shoulder holster, or two guns.
A shoulder holster is more accessable and more comfortable too while sitting, as a rule. If you spend all day in a car, a shoulder holster is great.
Cons; They can get hot.
A little slower to draw than a regular duty holster.
Good ones are expensive.
If you are active, they can become annoying, dancing on your ribs all day.
They looked like they can go loose when you run with it??
Yes they can flop around, but your cover garment and tie downs (if you use them), limit the movement.
I've used a DeSantis (a model no longer made), and several Galcos; Miami Classic (excellent), Half Harness (good only with a light pistol) and Executive (made for a very limited number of guns).
I prefer good old fashioned OWB for comfort and accessability, but a good shoulder holster has it's place and time.