yes, but unlocking it WILL CHANGE THE GAME, wheter you want to swap covenants or not, so it will obviously have impact...
i mean personaly i wouldnt mind having different ability (as DK necrolords ability is realy bad), but pretending it will have no impact on people who dont want to minmax (which doesnt mean we dont care about performance btw) if its decoupled is at best ignorant, at worst simply lying...