Various people have asked about this bag, and the crumpler website doesn't really give you any decent pictures so here you go... Sorry, don't know what the US name for the bag is...
Great shots of this lovely bag, it looks much nicer to carry than a backback. I had a google round and found a site called bristolcameras that sell them. There was one a bit smaller than yours called a stunner which I quite fancy. Made to carry one body and a couple of lenses plus sundry odds & sods. Lifetime guarantee, must be good.