My typical kit is a 16-28 Tokina, 35 F2 Zeiss, and Nikon 85 F1.4. I use the Domke F2.
Also carry a couple of SB-800's.
The bag is basically divided in two, one area has a pouch that has adjustable dividers for your lenses, the other is open and where you would typically place the camera. Plenty of pockets for other items as you choose.
I have tried other shoulder bags but I keep coming back to this.
I prefer this one for sling:
and Kata 3IN10 as backpack for the small setup body+lens + 2 lenses
you should probably take your camera to the shop with the largest lens you want to carry and size it up from there. no photo, measurements, or recommendations will tell you how it's gonna fit for you.
Just keep clicking, something will turn out fantastic.
Nikon D600, D7100, Canon (!) G15, Nikkor 35mm f/1.8, 85mm f/1.8, 50mm f1.4, 70-200 f/2.8 VR II, 24-70 2.8; Tokina 11-16 f/2.8, 16-28 f/2.8