That vege trellis supports a lot of weight, I have used it for beans, cucumbers, and have heard it will hold cantaloupe and small watermelons. While it would support the tomato stems I cant see it being too much help for the stalk and it does sway a lot
weight wise though it would not be a problem. If I do hay bales next year, I will use that vege net stuff for beans and cukes for sure! It is cheap, sturdy and almost indestructible unless of course my Hubby gets a hold of it. the description of my husband is that he could destroy a lead statue with a paper hammer, and it is pretty close to true! hehehe
Kelley