Hang fire a mo Don - I have a gig bag at home that might just be the thing you're looking for - it's the most seriously padded gig bag I've ever seen/owned. I bought a 12 string on Ebay and the case was included. My main gripe with it is it's weight - I'd never consider carrying it any distance without strapping it on my back, but it seems to me it's built for back-packing.

I'll get details when I get home and re-post here if you're interested.