Hi Michael,
I am actually working on a bag similar to this for my friend who is a photographer. I am very interested on hearing more about he exact use of this bag. I would like to have some more info so I can see what it is you need. In the meantime, look at my website. I am fully capable of making a totally custom design to fit what you need perfectly.
Talk soon,
-Bryan
www.MadebyWales.com