Thanks again for all the advice. I would really like the Arkel small bag, but I think it's too small for my DSLR w/ lens attached + one extra lens. I would want to add some padding and a divider, too, and I just don't see it fitting. Basically, I'm looking for a small camera bag.

My thinking now is to get the Lone Peak, with the Ortlieb insert. I can buy both from Wayne at thetouringstore. His measurements indicate that the insert will fit nicely in the Lone Peak bag (an inch too long for the Arkel small bag), and then I'm all set. Meaning no offense to anyone, I'm just not interested in the Ortlieb bag. Their insert looks almost perfect, however.