Personally I will do M/D for mine, though I play much more E2 than E4. I feel like FOmarl doesn't really have an answer to E2 Sinows just by herself. Native would probably feel great on Zols, however. Hopefully I can get a nice N/H Vivienne instead for those.
IMO, you can use Grants on Zus, and Demons Cards/Bringers for Dorphons if you need to do some cleanup. I usually try to group them anyway for SoF. Come to think of it, I rarely use my RM to clean up those two mobs.
Boils down to my subjective thought process: "I think 100N will help me less against Zus/Dorphs/Bootas than 100M will help me against E2 Sinows."
Just wanted to give you another opinion!