Might be an interesting experiment to do some with and some without, if space allows. I have tomato plants in both earth boxes and in regular planters, and it is amazing the difference in the plants. The ones in the earth boxes are massive; the ones in the regular planters don't look anywhere near as good. Same seeds. Planted at the same time. Same soil amendments. All within 20 feet of one another. Interestingly, tho, the ones in the pots have produced fruit much sooner. But the ones in the EBs produce more fruit over a longer period of time. I think it has to do with stress. And one other thing I read is that even, consistent, deep watering is the key to avoiding BER. And that it's generally not a problem with cherry tomatoes. Now aren't you sorry you asked?