The native full plate armor and the black armor don't really match any armor I know off. They're verry bulky for sure. I think a lot of peoples fuind them weird 
Amen to that. I for one won't even wear the things because they look so awkward. In Native it was almost always a heraldic coat and mail, and occasionally a Cuir Bouili, but never plate.
Surely using the armor styles that show up in M2TW doesn't violate copyright? I mean, if you just took the M2TW work and somehow magically used the exact same thing for the mod, then I could understand, but it seems that as long as you still actually have to do some work to get those types of armors into this game (which I assume you do), there shouldn't be a problem -- it isn't like Creative Assembly or SEGA have intellectual property rights on what medieval arms and armor looked like.

Cheers.
P.S. That said, Calradia Rising isn't bereft of awkward armor structures of its own:
That guy in the second armor has the worst case of a spare tire I've ever seen.
