Concerning your question, HF, I tried it and was a slight disaster. I couldn't make it work properly. I will ask help from some good friends to see it with my eyes, but few people smoke tumbak around me.
Talking about bowls, deep bowls are a shit. They make you waste a lot molasses and coals and the smoke is not uniform. For the most part of molasses the best thing is a big diameter and a small height. In Middle East, for example, in some cafes they used bowls with a height of 1 mm!!!! I'm not joking. They save tobacco and can use small amounts of coal.