[Fern]

A lot of people always expected this to be normal behavior. As far as I know, the weapons that don't proc their On Crit effect for doing it with another weapon specifically state that you need to use the weapon with the crit effect for the condition to be met.

In layman's terms.

I've noticed that if the weapon doesn't state you have to critical with -that- one specifically for the effect to trigger, then it will work with another weapon. This is also how Moonlight Mercy used to work, but it was changed.

The ones that do state you have to use that weapon specifically however don't do the effects with another.

Just for reference.