...I have not used that particular one, because the cheaper ones from Nashbar were available until last year or so.
But the design is similar, and they support the weight of a full water bottle on the bar quite well.
If there is a drawback, it's that if you go over a railroad track type bump at speed, you can launch the bottle.
Which I have done at least once. But that sort of motion can launch a down tube mounted bottle too. Which I have also done at least once.
