Whilst making this model, i got to thinking about how it could work rather than just as a one handed or two handed blade class tank or dps.

So with a Wakizashi, i can imagine that samurai would use this smaller blade as part of a combo (at least animation wise). For example, lets say its a tank and has a dash/quickdraw attack which charges through the enemy and has the same effect of provoke. Potentially on the other side of the boss or once the dash is done, the Wakizashi is used for a backwards stab. The stab i'd say is like PLD using provoke then Shield Lob to grab and hold the first batch of Aggro Points.

As for scabbard i think they'll definitely add them. Non-bstance would just be the katana sheathed and when it comes to drawing the weapon, the character crouches slightly, one hand holds the scabbard whilst the other holds the katana either slightly drawn or still sheathed (Reference of most stances used before quick draw strikes)