This is an interesting concept, you can eat sushi or you can have a burger. Both offering are complete and sound (also few, very few, vegetarian options).
On the sushi side, this is so far the best sushi restaurant in Charlotte (having been here about 2 years and having tried many). Fish taste great and properly sliced, and the chef inventions (ie specialty rolls) are interesting and tasty.
On the burger side, properly cooked, a good variety of options (incl meat), makes this restaurant beating many burger-only restaurants available all over Charlotte.