I'm seriously considering giving it a try.
I have two pistols that carry quite nicely in JMCK #3 IWB holsters on the strong side: a Walther PPS M1 and a PPQ M1. The PPS is my normal EDC - it's so comfortable I no longer notice it's there. The 5-inch PPQ carries almost as well from both a concealment and comfort aspect.
My thought is to purchase a weak side #3 IWB for the PPS, so it can ride opposite the PPQ. I would also carry an IWB mag carrier for the PPQ in front of the PPS. While this might sound crazy for anything beyond fulfilling a John Wick fantasy, I consider the following as worthy advantages;
- Should my strong hand/arm become restrained by an assailant, injured, etc. to have a second gun easily accessible on the left side
- At an arm's length confrontation, I consider the PPS superior to the PPQ because there is MUCH less for the assailant to grab hold of forward of the trigger guard and so it would be selected in such a scenario
- Provide the second gun to an unarmed person who might be accompanying me (such as my wife) for a collective defensive effort
- BUG in the event the primary becomes inoperative or is dropped, taken away, etc.
In my case the key to the utility of the second gun is that it must be readily accessible and handled just like the primary, only from the weak side. The "mirror imaging" of draw strokes and weapon manipulation I see as a major advantage. Based on some experimentation with the holsters I have, it seems quite viable from a concealment and comfort perspective.
I would welcome any feedback or experience anyone would like to share on this.