well you are dealing with social dynamics here, but recently when my naked neck rooster got an eye infection it caused him to loose status, at that point a duccle male of mine stepped in as top cock. the older rooster is back to his status as top (he does have some vision loss in that eye but not enough for them to sneak up on him anymore) so the one duccle is back to the same status as the others, a peripheral male that will occasionally copulate but is usually kept at bay by the naked neck. and this is in a confined yard they are not free range (i have dog problems). i have had occasional problems with a really bossy duccle hen but that was probably just her. for the most part they mix well like any other breed.