It work but the AF was slow. If it is a paid shoot, I am still ok. But when I approach a stranger and ask if I can take her photo, it is quite embarrassing that the AF went jackhammering.Strange that you say the EPL-9 does not work with the lumix 20mm. I know it works with Olympus and Panny mft bodies past and present. It's one of my early mft lens. It's not the fastest AF but it small and bright.
Shot this way back in 2012 with an EM5mk1 and the 20mm lens
GF2 with the 20mm in 2011
To be fair, the weather was quite cloudy and dark.