Currently I'm playing on the PvE server, however i'm agree with atmospharos....mixing PvE with PvP players is not a good idea at all, the game itself would lose its credibility.
A solution could be adding a feature that allow to duels, where both players must be agree, on the PvE server....at this way PvPers could join the PvE server and keep fighting.
On the other hand PvP server must be PvP only and everywhere as it is...and in future, siege and the ability to destory buildings and ransack tribes.

Not agree with PvP+PvE on the same server.