Also the new "Vector" range by Tenba look pretty ideal for your purpose -
http://www.tenba.com/Collections/Vector.aspx
.
Which Tenba fits only a digital back perfect and snugly?
I know Leaf used to do them for their backs, maybe they still do.
Per what I know Leaf no longer makes them. I can tell you what I did for my Leaf. After buying a large neoprene pouch made for notebook computer, I went to a tailor with outer dimensions of my back and a sketch. I had them make essentially same as the Leaf pouch out of simple neoprene, no padding (stitch on outside corners). Except in contrast to the Leaf pouch mine does not have a lid with zipper. Instead I had them make two of these, with one slight larger. Thus I put on one from the rear of back first, then the other from the front of back. The one that go on the rear of back has double neoprene at rear of back where I have cardboard to shield the large Leaf screen against impact.
It works great, and looks cheap. To make it look cheaper during travels and to better protect against humid and in case of accidental drop of my bag in water, I put the back with my custom made pouch in a large zip lock plastic bag. Chances are if any thief gets into my bag… they will leave my back but steal something else!
Added bonus to above, is that when I have my back mounted on camera, one piece of my pouch can be put on and even stretched to do so when Leaf battery is attached. It works.
Indeed if Leaf or Phase One makes a new puch, I believe this is the concept they should use...
I hope above helps
Regards
Anders