I note that the Lunker fin option offers Overtake (and +1 ARM). The Hammerhead Shark arm has Critical Consume. My one concern is that with Consume, the model is not destroyed before being removed from play, so Consume will not trigger Overtake.
This is not a complaint, but I am hoping that perhaps that can be amended. I do like the idea of smashing through a line of infantry with a hammerhead shark.