A friend calls it being amphibious...

Paul said (emphasis mine):

19 Even though I am free of the demands and expectations of everyone, I have voluntarily become a servant to any and all in order to reach a wide range of people: 20 religious, nonreligious, 21 meticulous moralists, loose-living immoralists, 22 the defeated, the demoralized—whoever. I didn't take on their way of life. I kept my bearings in Christ—but I entered their world and tried to experience things from their point of view. I've become just about every sort of servant there is in my attempts to lead those I meet into a God-saved life. 23 I did all this because of the Message. I didn't just want to talk about it; I wanted to be in on it!

1 Corinthians 9:19-23 The Message