Upside down toms

I was bought a couple of upside down hanging tomato planters for Christmas. I have just planted one of my Tigerella plants in one. As it's a lot of compost for one plant I decided to put a minibell tom in at the other end with a bit of basil.

has anyone found they grow well in these ? My suspicion is a plant growing upside down would not be normal but of course I am probably wrong. Also, watering could be tricky if it ran all the way down the plant.