I have wondered if the custom character Fiend patron is the same as Wyll's but at this point I think it would be ridiculous if that were the case because for one surely there are many other Fiends one con enter into pact with and she's also after Karlach too...it would be too much if she could also be the player character's patron. But yeah I think I'll also go for the Archfey patron. Dealing with fiends in general seems like a bad idea.