Gee, I guess it's all in how you look at the pot. I have a very tall pipe set in cement, it has holes all up and down it. I fill up the pipe to the bottom hole, stick flowers or whatever in there, go to the next level with soil shove another plant in and so on and so forth. I water from the top only with just a slow trickle till I see moisture at the bottom hole. It does work. I'm thinking of sticking adenium in all the holes just to see if they take. That would be a plus since desert rose take very little water.
what ever you decide good luck.