Good find Bill, same sensor too!
they both support a hot shoe EVF, and a hot shoe Samsung EM10 mic which has a 3.5mm headphone monitor. The mic also has a built in electronic analog to digital converter and volume control.
Now if you wanted a boompole shotgun mic with an xlr cable, you’d need an external sound recorder, but if you were going for professional sound, you’d do this anyway. have you had any luck with audio good enough from in camera?