My go to combo for fall colors has always been a 135 f/2 on a full frame camera (currently an A7 with the Rokinon 135). Breezy weather made the manual focus situation a little frustrating so I grabbed the E-M1.2 and 40-150 pro. The Olympus delivered the goods (again), to the surprise of no one.
So I returned the PEN F. I just did not get along with the ergonomics. Too many buttons and dials. I traded for a Pana GX9 and couldn't be happier. Aside from the 1,000% better ergo's, the image quality is noticeably better as well. I know it's the same sensor, but the GX9 has it all over the Pen. I've also found that focusing adapted lenses is much easier with the GX9.
A few Blue Hour photos from Brooklyn Bridge Park, NY. First 3 with the Contax 100mm f/2 C/Y manual focus lens. Last one with the 12-60 kit lens.