Alright, my AW 200 came today. I'm glad I ordered that one. In fact, I have it on and fully loaded right now.
For years I've been using a Tamrac messenger style bag (looks like it's discontinued). But I needed something for hiking/extended use situations, and for travel, so I could bring along my film body and all its accessories.
At first I was a little put off by the fit and feel, but then I loaded it up and adjusted it a bit more. I like it. Right now I have stuffed with a K10D w/ 18-55 mounted+ lens hood, a -M 50mm, Sigma 70-300mm, Sigma 28-70mm, lens hoods for both the Sigmas, and some misc small items. In the top pocket I could fit my ZX-M, plus a few small items including the electronic cable. The smallest outside pocket has some pens, a small notebook, and lens tissue. This is great.
For short term, around the city use, I'd stick with my Tarmac bag, since that'll fit either camera, plus a mounted lens and one or two extra lenses. I like the Tarmac because it's lower profile and I can move it around more easily, but it doesn't carry well over extended periods.
I love all the pockets on the AW200, plus the little pocket to tuck away the support strap is great.
I've attached a cell phone image
and you can kinda make out the 12" ruler across the bottom.