Your IQ so low you think swordsmanship is something like from being a different race
Yes they can use different styles, thats called being an overall well rounded warrior.
If Shiryu beats Mihawk with the help of his DF he won't be WGS.
Same way Roger wasn't WGS after Xebec died you low IQ. You debunked yourself easy by forgetting that Xebec died years before Roger become PK lmao.
No one cares that pathetic WGS hide behind Emperor title.