You guys know how I bought a new Tamron bag for a trip. Last weekend, we were showing my inlaws around NYC, so I played tourist and carried the kit I plan to take to London. Turns out this bag is too narrow to comfortably carry all the lenses I want to carry. They all fit, but squeezing them in and out is a chore, and the bag itself is a bit uncomfortable to carry.
The next day, I went back to my Lowepro Offroad. Everything fits in the bag, or on it, easily, but the thing is too awkward to carry for miles in a city. So the day after that, I went to B&H and picked up the Lowepro Off Trail 1, a belt bag. This bag has room for 1 body, 3 lenses and nothing else. I tried this bag for the first time today; we walked the length of Central Park and then some. Turns out the third time was a charm! I have easy access to the most important gear, and the weight of the batteries and image tank is in a backpack. I hadn't thought of splitting up the weight of the gear, but it did seem to make a difference. I had thought the Off Trail 1 looked small, but it fit the istD and the Tamron 28-75 with a neoprene neck strap (although it's tricky getting the neck strap in). Anyway, I'm now up to 7 camera bags. Only 5 steps left to go! Amita