I tend to do my narratives chronologically combining assessment, treatment, ongoing assessment into one combined piece. Generally, I try to avoid repeating what is already on the run sheet (age, LOC, meds, hx, secondary exam, etc all have their own place in other parts of the run sheet), but will clarify/expand where need be (changes in LOC, for example).
If I'm on a RN and/or RT CCT call or end up calling paramedics, I'll reference their run sheets as appropriate.