Caboose,
I was in Ft. Worth Texas about a month or so ago and looked at a British Army Surplus Rucksack just like this one. Only thing is, it was in really good condition (very little abuse and soiling as noted in the Omaha's advertisement) and they were asking $149 dollars! I passed it up (
stupid me, I regret the decision now). To answer your specific question, the one I saw was a longback but I don't know if they're all the same or not. They only had the one on display in the store. I'm going back at the end of the September and I'll ask a few questions. Anything else you'd like me to ask about specifically?