>>33194328I think the body plays a part on the sword-fighting idea while on the water. If it was a biped, it would have to stop at one place to unseath the blades. While on four feet, it would be able to quick draw while backpedaling is it's adept to use all it's limbs.
Also the helmet would be 100% worthless if it was bipedal unless they made it a semi quadruped. The helmet is a shell, so any shell it carries is going to be used as a weapon. I don't think its that bad of a design, while being a fully bipedal would increase it's appeal, there is some merits of it being primarily quadrupedal.