Quote Originally Posted by CKNovel View Post
That's probably a "lore" reason. Zenos never liked the gunblade used by Garlemald. He suddenly picked up a katana not because he was a massive weeb, but because he was interested in the blade.
Between gunblade and katana, the later is much closer to a scythe. I'd say Zenos originally was attracted to Scythes, maybe due to past life or something in this idea. That's why he was interested in the katana.
How is a katana similar to scythe. At least a Garlean gunblade is still just a sword when you aren't shooting bullets out of it.