Just Fred wrote:
What do you define as a "standard" water bottle. My typical gear includes a bottle (collapsible, re-usable) that I bought at the Grand Canyon. It has a carabiner clip attached, and I can use it directly on a camera bag, or by adding another carabiner, can attach it to straps (computer bag, camera bag, etc.). Problem solved.
I always carry a refillable, non-disposable bottle of this sort, so to me, that's my standard.
Then there's <mostly> always a belt loop.