I love it a lot, and it looks like it fits well in the TF2 world! It does seem a little impractical, but TF2 is a goofy game so I don't really care it it doesn't look practical. I would say that the handle on the BLU team version should also be changed to a blu-ish colored handle to make it more distinct from the RED version. Other than that, I don't have anything other recommendations.
Keep up the good work!