I use a HPG Heavy Recon Kit bag to carry my binos (10X42 Leica) rangefinder, and a pistol. You can get most any pistol in there, but a revolver does tend to jab you in the sternum with the cylinder if there is a pair of binos hammering on it. Autos are great.

I think a bino pouch added to my setup would be too much, but it might be just perfect with the recon.

I like the concealment/protection that the kit bag gives you, and I doubt you'll regret getting one, even if it doesn't become your goto bino carrier.