You can also combine them to then have stories like As <persona> I can <capability>, so that <receive benefit> Which improves the story a bit imho because you

You can also combine them to then have stories like As <persona> I can <capability>, so that <receive benefit> Which improves the story a bit imho because you have a clearer picture on what "role" does or can also divide them up (according to familiarity/usage frequency of the tool e.g.)