There will be BOTH. I have configured the plugins to work with each other. If you CHOOSE to be a part of a nation you can have safe ungriefable land for a daily payment. However if you believe you can hold your own then you can make a faction of your OWN LAND but be prepaird to fight those that come toward you.
From this, I can make a donation perk that isn't game breaking and completely reasonable, you can get promised land in main town structures but you will have a limit to how high/far you can build.
This also makes it so that if people come to the server and want to have a area that is "Safe" from grief AND pvp they can do so at a price. But factions will still be a major part of this server