Actually, it's not too late for me to go back and change inventories by the end of Chapter 3. I didn't play much of Chapter 4 anyway, so I'll probably do that when I get the chance.
I seriously have no idea why I gave Ethlin the Silver Blade. I was meaning to give that to Beowulf but for some reason I forgot about that plan. I could understand if it's better for Cuan to not have that Silver Lance since it'd have more use for others.