Combat handgun carry

[Kfgk14]

According to everything I've read/know about handguns, the preferred method of handgun carry under combat circumstances (when not constrained by need to conceal, being in a vehicle, etc.) is OWB, on the hip or perhaps thigh.
However, are there circumstances in which carrying in a shoulder or chest mounted holster would be justified? For instance, if one was doing a lot of work/spending lots of time in a vehicle (in a combat situation), I've been told by some that carrying the handgun on the chest can be advantageous. In my layman's experimentation with my Glock and hip holster, I have found that drawing while seated in a vehicle can be difficult (especially as a lefty). I can't think of when a shoulder holster would be helpful, but are there circumstances where it would?
Thanks, and excuse my ignorance if there are obvious reasons I'm overlooking.

[Magic_Salad0892]

According to everything I've read/know about handguns, the preferred method of handgun carry under combat circumstances (when not constrained by need to conceal, being in a vehicle, etc.) is OWB, on the hip or perhaps thigh.
However, are there circumstances in which carrying in a shoulder or chest mounted holster would be justified? For instance, if one was doing a lot of work/spending lots of time in a vehicle (in a combat situation), I've been told by some that carrying the handgun on the chest can be advantageous. In my layman's experimentation with my Glock and hip holster, I have found that drawing while seated in a vehicle can be difficult (especially as a lefty). I can't think of when a shoulder holster would be helpful, but are there circumstances where it would?
Thanks, and excuse my ignorance if there are obvious reasons I'm overlooking.

I don't dig it because you're muzzle sweeping everybody on your offhand side when you draw which violates the most basic of weapon safety precedures.

[Littlelebowski]

Why are you worried about this?

[markm]

If you drive around in a flight suit, you might go with the shoulder holster.

[nineteenkilo]

While in service, I wore mine on my strong side thigh. The primary reason for this is because that's what kind of holster I had. I never gave a shit where it resided as the 92 I was issued was better used as a bludgeoning weapon than a handgun.

The extra rounds saved by constant stovepiping were a miracle of government efficiency and added valuable weight to the palm size Model 92 flail.

[Kfgk14]

Why are you worried about this?

I'll admit by giving the following reply, I'm donning the tin foil hat...

Hypothetically, if TSHTF and mundane daily activities become dangerous, I'd want to be armed effectively as much as possible. I didn't grant credence to shoulder/front-of-torso carry, I'm just wondering if it'd be a viable choice if, say, I was bugging out in the truck, or more likely doing any of the various mundane tasks in my rural locale which are made easier with a vehicle (transport livestock, haul firewood, mend fences, haul out large game, etc.).

Aside from some extreme circumstance such as a long-term collapse, would I ever need that immediate of access to my handgun when in my truck? Nah, probably not. I'm asking this more academically than anything else.

and @magic_salad, safety seems like a very good argument against it.

Thanks for all the replies.

[Surf]

While I primarily run a belt mounted offset drop holster set up (NOT a thigh rig), I do have the option to move my holster to an armor mount as seen below. This is primarily for vehicle operations or when I am rappelling. I also know that many K9 handlers like to have the sidearm armor mounted as it causes less issues with the dogs leads.

I mount my pistol in this orientation when connected to my armor. I do not like the pistol mounted high on the chest in a horizontal orientation. I will also note that I have since moved away from the Blackhawk connect system in favor of the G Code connect system.

[WillBrink]

What does that rig weigh?!

[Shokr21]

What does that rig weigh?!

That is a pretty hefty loadout. What exactly do you do that you need such a complex rig?

[Surf]

What does that rig weigh?!

Full kit with rifle and sidearm from helmet to boots and I am about 60 lbs heavier. I have 2 other loadouts also. One for deploying with the bolt rifle and another light loadout, for certain operations or for bush tactics which can be a soft carrier only with option of adding on a plate carrier, or plate carrier only. It is much lighter and more streamline than the full kit.

That is a pretty hefty loadout. What exactly do you do that you need such a complex rig?

I have dropped one rifle and one pistol mag from the carrier pictured above and use a drop leg option for adding 2 m4 mags or gas mask as needed. I use a pretty standard loadout, 3 M4 mags, 3 pistol mags, Flashbang, radio, knife, flashlight. The heft comes from the Paraclete carrier, soft panels, front and rear MSA rifle plates, horse collar, bicep and groin protection. I do not run the battle belt pictured with this carrier. I use a simple contractor style belt with pistol, dump pouch and cuff carrier. The set up is heavier than I prefer overall, but nothing I can't deal with for my purposes. It is a required set up as provided by employer.