Board Thread:Speculation House/@comment-77.164.204.175-20170510162019/@comment-25936766-20170511133637

Maybe in cases like Ruby, who uses a polearm. Or Ren, who uses dual weapons.

In cases like Jaune, who uses a shield and sword, ambidexterousness is rarely developed since you train and practice to use the sword in your strong arm and the shield in the other. Though granted, most swords like his were designed to be wielded in both hands too, so depending on the style, it's not "rarely".

Not sure about cases like Weiss who uses a rapier, but I'm pretty sure fencers still train and focus on using just 1 hand, the strong hand, leaving the other free for other things.

But overall, it's not "most people" who practice in the use of weapons become ambidextrous in their usage. It's possible, but depending on the weapon, not likely per se.