Thanks for clarifying that. I was reading through the Bow Guide on the wiki, I didn't see that mentioned.
So there is a benefit to not use any coatings when having a bow with a strong element equipped (if it cannot load power or c-range)?
Finding a way to get Power C+ up to 10 is preferred because Power Coatings give +50% damage. C. Range gives +30% when you are very close or meleeing. Otherwise, yes, only swapping to coatings to apply status ailments is a good idea.