It's funny because the Evoker's supposed to be the easiest way to summon a Persona, requiring less concentration and strength of will in comparison to just manifesting it. In fact, only Junpei stops using his Evoker by P4AUltimax. The rest of S.E.E.S continue to use their Evokers for their Astral Finishes.
Spurt of bloodPe—Persona!Alright! Persona!!Eh...!?Persona!!Wha...That looks really painful...!What's with this difference between our way of summoning...!