I have a brown Mei Voyageur since 2010 and it is still going on strong despite being thrown and kicked around by both myself and airport staff. They still have a Netscape email account so yeah, poor internet presence. Their FB page is also rather odd for a business too, but look through the pictures to get an idea of their customisation.
Only reasons I'm thinking of buying a new one: to add a pocket for a water bottle by the side. And maybe use rip-stop instead of the heavier cordura. I also forgot to ask them to adjust the waist strap to a smaller size when I first bought it, so it fits snuggest at its tightest ONLY when I am wearing a wool coat. Which makes the waist strap useless when I'm wearing anything less.
I've never used the shoulder strap though, because I usually just hide the waist strap if the bag is light and I don't want to have too many things dangling about.