I made them last year for the first day of school dinner - my oldest DS liked them so much that on nights we have spaghetti he asks if he can have his in a taco shell. I try to keep hard shells in the pantry for just that reason. If we are having meat sauce it's no problem, but if I make meatballs instead I usually smoosh one up to add to the "taco".
They are actually pretty good - the saltiness and crunchiness of the shell goes well with the spaghetti.