Had no problems with ejection on a long bumpy gravel ride, including in washboard sections where I saw lots of other riders bottles down. For aesthetics, order one left and one right. I ordered two of the same and while I am disappointed it doesn't look perfect, I have no problems grabbing either bottle.
If you are looking to put a reasonably priced bottle cage on a bike when not obsessing about how the thing weights this will be your go to cage. Not a lot of color choices but white or black usually work right? I put one on an old mountain bike that only has one mount and a very low clearance between the frame and the cage. I think this is as good as it gets.