I want to jab people with my wakazashi. It looks cool next to my katana sheath, but it would also be cool to have a reason to use it. I think it could similarly be cool if like, for example, I'm using a bow and shooting at someone, but I want to jab them with a dagger because they got too close. It'd give people a reason to carry little weapons along with their main weapon. You wouldn't be able to use the weapon to do anything else without switching to it and it'd be on the same timer as nudge.
Alternatively, it could still be fun if you could only make use of it if you had a free hand. Like if you were using another one handed weapon or a two handed weapon that could be used with one hand. e.g. a katana