Good for one trip
The bag was well designed and definitely saved me room in the car. I only had two problems with it. 1) Had it been waterproof, I would not have had to wrap everything in trash bags to pack it. 2) The clips are made of cheap plastic and I already broke one strapping it down for the ride home.
Other than these two problems, it did what it was supposed to do. Friction is doing a visible job of wearing off the water resistant coating on the inside of the bag where it rubbed on the corner of my suitcase, but that is to be expected.
Summary: If the clips were made a little hardier, or Thule sent extras, I would recommend this bag in a second.