Not in swordsmanship because Haki is fundamental fabric of One Piece world and this chapter Oda told us that Haki and Swordsmanship are interchangeable terms in One Piece meaning anytime any non-sword user uses any Kind of Haki, he is borrowing a swordsmanship ability
I guess only counter to Swordsmanship would be devil fruit but Swordsmanship or Haki is superior to Devil fruit in fabric of 3D reality of One Piece
I guess only counter to Swordsmanship would be devil fruit but Swordsmanship or Haki is superior to Devil fruit in fabric of 3D reality of One Piece