The bag is easy and (insert removed and folded) after disassembly not much larger than a light sweater in the trunk. I travel with my then safe, heavily padded gear bag and climb on site most of the sling around (ok, luxury, but I am no longer 20 years old and train all day 12 kilos photographic equipment around ...). The insert is foldable and has then about the volume (not the ground) a prudent Paperbacks.
The use is sufficient for a Nikon D7100 with attached telephoto or wide-angle, much more depth but it does not have, so if you have mounted a longer look at the camera .... In addition, additional lenses and equipment leave well in the rest room of the pocket ( in neoprene quivers - at least) store with me outside of the insert, there remains plenty of room for a travel guide and a possible water bottle (ok, you should anyway not in / in a camera bag might have) can be practically lashing on the outside.
What makes sense and fits securely with me in my pocket: Nikon D7100 + Sigma Travel Zoom, Wide Angle 12-22mm (Neoprene Holster)), Nikkor 85mm portrait lens, spare battery, filter, SD cards, Gorillapod ... to two guide and notebook, like to a Scarf.
No, I actually quite like to run without the Chargers, Card Saves / hard drive power cable, base plates, etc around that I have stored in my main bag around. Especially on 1700meter above sea level
A tripod can be externally mounted anywhere, a slight downside. It would, however, contradict each function with the "Easy" and "Slingbag".
The sling strap is extremely comfortable to wear and adjust. After two more weeks of holidays in which the bag was in daily use, I can only express my full satisfaction.
For me - a sensible purchase. Yes, the bag is not exactly cheap and it has a clear limited purpose corridor - like almost everything in Fotografieren- but if you think about how many times you ask yourself on holiday with full equipment whether "it would not today have made more sense not everything about equipment here to have ".... the acquisition should consider. For people who a pocket for a Compact or 4: 3 search system it is anyway always sufficient.
PS - The bag holds drizzle, more I would not trust her