Muskrat Mike, those are some priceless photos. Thanks for posting them.
Personally, I carry my bag on my left side, along with my horn on a separate strap, although I am right handed. The horn hangs above the bag. I have tried to use a smaller bag several times, but always found it frustrating trying to sort through things with my big hands. The smallest bag I would be comfortable with is a medium sized bag, but by far I prefer a larger one.
John (Bigsmoke)