I wanted to make a pizza with a premade crust and pizza sauce, but I didn't have shredded mozzarella. rather than make another cheddar-only pizza I took mozzarella string cheese and ripped it into lots of little bits and scattered them around the pizza. The resulting pizza has a lot of white streaks where the mozzarella was and the stringiness doesn't seem to affect all that much, just making it harder to pull two pieces apart and keep the cheese separated. Texture-wise it's not really that different from normal.