The point of an RP PvP server is to have cross faction rivalries happen organically, without the need of any sort of organization. Imagine it being something like 2 people randomly looking at each other, beating each other to death because they’re both flagged, and then they call their guilds. BUT they also do a little RP story because of that.
Basically, the server becomes a salty spitoon and it’s a pretty good and fun time. Just sometimes you want some world pvp happening while having rp at the same time.