Fantastic! Make sure to use reduced-sodium soy, though; I didn't have any on hand, and the tofu was 'way too salty. But otherwise the blend of flavors is delicious!
Make up all of your rice into the balls as soon as it's done; I'd made just enough for one lunch then put the rest of the rice in a container in the fridge -- next day it wouldn't stick together.
Great tasty lunch!