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