How many of you carry multiple camera bodies at the same time?

My wife today bought a 6D Mark II to replace her 6D. I already have one 6D and I've had an interest in multiple full frame bodies so she'll gift me her old 6D. I'm planning to carry them both at the same time when on photo trips.

I have 2 of the Black Rapid RS-4 classic strap and plan to use Kirk 1" plates on each of them. My plan is to strap one over each shoulder. For anyone of you who do this how to you carry your cameras?