The Esci are not bad but I think the new Hat ones are better. I don't like the ESCI Zulus shields... I like the a call to arms ones too despite they are lightly smaller... Their Zulus are terrific and very lively.
Now about the Roke's drift set thanks to your information I found this link on the net about the Warlord Games Roke's drift set. It gives a good overview on what we could get, with lucky chance. May be you already know it, but in case you don't:
I really look forward for the buildings but I do hope too we get all the rest that could provide a very good diorama. The mealie bags and crates walls and the stone walls and the cart. All these things that could provide good diorama elements.
Let's hope !