I see in the TOSBASE that you puting on the murmillo helmet dismount you.
What if you mount again? It cancels the helmet buff?
I too would like to know this. But someone has to be pretty experimental to try it out, because if it doesn’t work, you’ll be down one whole character essentially.
Plus no Murmillo skill work on top of a mount regardless. You’d be taking R8 solely for the Cassis Crista. Though let us say you can hop off throw on your helmet then hop back on, most other skills from Rodelo do work while being mounted, the only ones unable to work would be High Kick and Targe Smash.
But even then, you’d have no real damage since you cannot use your Murmillo skills on top of a mount, and you’d need to sacrifice a circle of something to fit Cataphract into the build.