I highly think if you have Dual Lord right now you should trade it asap.
Its gonna drop so much in value and people are doing good offers/overpays for them so I think you should trade it soon or you might not get good things for it.
They are right bois! Trade me your dual lords I will give you next to nothing. Value is going way down fast. Almost evil shock fast.
But seriously they seem to be settling around the overlord in value level. So if you can get more than what the overlord is worth go for it. If not I would just hang on to it.