My thwackpack is also showing wear after 1 year. The stitching is ripped in 2 places. Not a big deal, but I expect to need another one in a year or so, unless I can get it sewn up properly (which is not in my skill set).
FYI in case quality control is listening: the ripped stitches are on the right shoulder strap, and the small zippered pouch near the top of the bag (by the handle).