I have the Tamrac 5612 Pro 12 buy pocket to stow away in the first place my photo equipment home safely. When I travel I use a Lowepro backpack - the rest of the equipment will be at home in the Tamrac bag. Therefore to me a little experience for wearing comfort is missing. The bag is well made (compared to my Lowepro products). The divisibility is quite flexible. Extremely large telephoto lenses are across the top of a kind of "gutter" and therefore to a lens length which correspond to the inner width of the pocket, be stowed. Schön would be a complete center floor to divide the bag into two separate levels .... but as you can with some creativity themselves something "cobble together". The possible allocations will simply when searching the Web for photos of the bag .....
Overall, the case is in my opinion recommended - I would buy it again.