PVE gear in PVP

How much PVE gear is allowed in PVP, mainly in arenas? How much does it affect on arenas? Thinking about joining on the server, but remember CATA being mostly about who had the best trinkets & weapons and with donators, would think that the arena scene is full of them. How bad is it?

PVE weapons & trinkets carrying everyone and rogues and retries even run with 2 pieces of pve gear for set bonus

You can go 2k3 in arenas with conq gear, but if you want to go above this you will need PvE items