To make a long story really short, four years ago I bought a pair of Carradry panniers to use for a specific trip because of their greater volume than the Ortliebs I have always used. But for reasons unrelated to the panniers, that trip did not happen. Since then every trip I went on I thought about using them and for one reason or other I kept using my Ortliebs. But I am planning to use the Carradry on my next trip for the first time. It would be on my Rohloff bike, so if they hung too low for a derailleur fitted bike, that would not be a problem.
The paper bag in the photo was wrapped around a 10 pound brick intended to simulate the weight of food on the bike for a test ride. I cropped the photo to just show the panniers on the bike. Rack is a Racktime Addit, not the Tubus Logo that I had in the other photo.
You can see that they hang much lower than most other panniers do. With that rack and pannier combination, I would imagine that some derailleur bikes could have a problem with the pannier pressing on the rear derailleur when in higher gears (smaller cassette sprockets). The Addit rack has a lower bar to hang the panniers from, if I used a conventional rack where the panniers hang from the top then the panniers would hang a few inches higher.