GoH up => Overwrite it.
Chalice forged => Wish it.
(So the two nations claim is based on false base assumption - that they are immutable and can exclusively abuse said mechanism)
That said, chalice is still too cheap and GoH as well probably.
Edit:
Oh, and I ain't asleep, just a long day at work and still haven't had a good evenings pampering of hot bath, cool beer etc :-)