I always wondered where the "Wakizashi" went when you use the "Katana", apparently the handle of the Katana is the "Saya" (Scabbard). If you look closely at her death cinematic, she actually
XCOM 2 - War of the Chosen
Katana XCOM 2 mod - 3D model by Barrartist (@barrartist) [6b5c3da]
PSA: Combining the Assasins' Katana with Bladestorm makes your Ranger completely immune to the Lost. : r/Xcom