Oh, i just noticed that L.L. Bean have changed their canvas rucksack design. It still looks good, but they raised the price by $11.
https://www.llbean.com/llb/shop/116657?feat=506219-GN2&page=l-l-bean-waxed-canvas-continental-rucksack&attrValue_0=Olive&productId=1614298The Alder Stream ones still look like the best deal though, and they offer customization options.
http://alderstream.wcha.org/packs.html