Oddly, I've never eaten fried, green... tomatoes. I would sample some if they were made by someone who knew how to cook them. I'm not it.
Never have been one to refuse to eat something different. Since introduced to east Texas, I've learned to love AllThingsOkra, all peas and beans know to east Texas man, crawdads, frog legs, raccoon, goat. Lots of things I'd never dreamed of and they are wonderful so am certain the green tomatoes would be more than edible.
My dear Mom would pick green ones in the fall and we'd wrap them in newspaper and store in the fruit cellar. When she wanted ripe ones, we'd bring a few up and set them on a warm windowsill to ripen. They may not have been as good as summer maters but were outstanding in Minnesota in November and December. lol