Scott A.wrote a review of Stoic Welded Haul Duffel on July 7, 2011
Good enough to hold stuff in the back of your car. Backpack straps actually held up when fully loaded.
BUT, the fabric is not durable at all. I took the bag on one flight to Denver and there are already multiple abrasion spots worn completely through the 840D bottom material. Now that the holes have started, the material isn't ripstop and they are growing.
As another reviewer pointed out, the zippers aren't water-resistant at all...just a reverse zipper. When empty the zipper backing material does meet closely giving the appearance of a water-tight-ish seal. However, when fully loaded the zipper backing material pulls apart because there aren't any compression straps to take the load off of the zipper itself.
Final verdict, if you are looking for the cheapest option that will hold a ton of gear this could work for you. Just don't leave it exposed to any weather (other than a shallow puddle or damp ground) and don't let it rub up against anything slightly abrasive.