I know that you are way experienced in this point and this is great reason I asked your opinion . @100Rad my dear friend get ready for a lot of complaints cries etc … Life of an admin in Conan exiles is very difficult to the heroic point , still I can tell you one problem you will find in this mixture …
1 .When someone is raided and see that he is loosing ,he can drink a potion , vanish from his base over encumbered and go to the pve zone to protect him self .
2. Or maybe someone is in danger chased by others and enter the pve zone to protect him self .
3. The worst scenario , someone from pve zones , farm for pvp clans . This would destroy all the philosophy of the game and the complaints would be massive .
My opinion ,is to create a pve c server and every weekend allow raids only in bases you fix as an admin for raid . Explain to the players who play on the server that if they try to raid other bases they will be banned instantly . You are an admin and you can replace all the loss the victim had and at the same time to summon a god or two and bring down the base of the raider , or simplest dismantle it . Another thing that you can do is to ask a great place in the North not to be builded by anyone and the clans that they want to fight eachother can have mats from you to build constructions max 10x10 , provide them thralls and mats for trebuchet and they can fight eachother without actually loose anything . They will love it .
Anyway , good luck my friend