I mentioned the doubling because I have the same buckles on my shoulder sac, with a straight strap, and although I can fit both ends into one buckle it is so tight I wouldn't recommend it.
I love the tapered shape of the strap on the classic pouch. I wish they did that on the newer bags that were supposedly inspired by this bag.
Me too.
Interesting comment about the strap on your shoulder sac. I have my eye on one and was wondering if the strap could be doubled. Now I know!