Of course these aren’t exactly rare in the United States, but I first was exposed to them in Europe and so I always think of that when I see someone with one of these bags.
They are particularly handy when you travel; the first thing into any suitcase of mine is my folded and snapped Pliage, which I then use to accumulate all of my purchases and receipts along the way. Then I use the bag as my carry-on for the return trip, so everything is in one place on that rare chance that the Customs people will want to inspect my newly-acquired treasures.
And online, you can order CUSTOM Pliage bags, specifying the length of the handles, the size of the bag, the finish of the metal fittings, AND!!! the colors of the sac itself. You can get a solid colored bag in about at least a dozen different colors, or you can get a bag made with a racing stripe, like mine shown above. They’re not at all prohibitively expensive (considering you’ll own it the rest of your life) and don’t take more than a few weeks to receive.
My only warning: I would NEVER, EVER consider using one of these bags for checked luggage. I’ve seen it done and I think it’s foolhardy; the lightness of the bags translates into a certain lack of “baggage handler-worthy” sturdiness, if you know what I mean.