The upside-down tomato experiment has now begun. There seems to be a great deal of hype surrounding it and all of the supposed benefits. Other people say its some kind of demented plant torture device. So far I can say its substantially more work than growing them upright, the 22L bucket weighs a ton so you have to be careful how you hang it and contrary to the hype you do have to stake the frigging thing otherwise the wind would shear it straight off! Still, it looks cool, and maybe thats the point.
I've used a roma as I wanted fruit that was not too heavy to stress the plant - bucket connectiomn but still large enough to test the idea.