I grow my little yellow tomatoes (candy on the vine) in self-watering containers. As long as I remember to keep the water level up and give them some fertilizer occasionally I have an abundance of tomatoes. And I just noticed recently that I do have two stalks coming from the same place from 3 seeds planted. I usually grow two plants with wire supports and it works perfectly.
One thing that I would NOT recommend is standing, pulling that candy off the vine and popping it into your mouth. There are just too many chem-trails being spewed out these days and you definitely need to THOROUGHLY WASH you veggies, including regular tomatoes before eating. When I was a kid I usually carried a small salt shaker and snacked on nice warm red tomatoes. NO MORE! I've worked with some of the chemicals they find in those chem-trails and they are NOT healthy for ingesting.