Yes! I use them and half-bury them in the ground in my garden for plants that have a tendency to send suckers out. It helps keep them contained and behaved.
When you mentioned the containers might need to be shorter, I posted the shallow containers (which I also use). I dug a bunch of rainlilies up to transplant but it has been raining a lot lately, so they are sitting in a shallow container until this weather clears so I can plant them again. I just lean the container to the side to drain the water when it rains (like it has been). Looks like there is a break in the weather this morning, so looks like a good time to get outside today!
What lies behind us and what lies before us are tiny matters, compared to what lies within us. Garden Rooms and Becky's Budget Garden