our roo is doing that too. we have new friends that have raised chickens who told me that their roo had a favorite hen and she was feather less but they seemed to enjoy each others company.
My girls hated wearing them at first, but now they don't care about having them on at all.
I know it saves their backs a lot of damage. It doesn't protect their necks at all, but the boys seem to have figured out how not to damage their neck feathers too much.