Tomato flowers fertilize themselves, so you might not get anything different. I don't worry about cross pollinations with my tomatoes, and saved the seeds of 4 different kinds to plant this year.I have different 6 tomato varieties planted together in a 5'x7' bed. I might save some seeds to plant next year and see what kind of weirdness happens. LOL
Not to say it can't happen. Just not as likely as other plants.
Totally useless, none were edible really.
