That would probably be his new bankai. We all have seen that some Bankai's of the other Shinigami did not resemble a sword. For example, Soi Fon's was a freakin' cannon. Also, I have read some fics that when a Quincy dies and is sent to the Soul Society, they become Shinigami, their Shikai is a blade but their bankai is a bow. Just a theory.
Nice work. I got ot admit that every time ichigo gets a new power he looks cool so i can't wait to see what he will look like when he starts using his quincy powers. Let alone when he uses all the pwoers he gained at once.