User blog comment:Portgas D.Eros/ Color of Armaments Haki/@comment-3181121-20101208230648

For Paramecia and Zoan it is most likely possible. We have already seen Luffy combining Haoshoku haki with gear 3rd (what wsa it called, elephant gun?) I think the same'd apply to other df users... Where it gets interesting is with the Logia guys. I actually don't think it's possible. It would just to be to overpowered...Magma fist with haoshoku haki? that'd be ridiculously deadly...