Same for me, I have the mod enabled. In the Steam Workshop, make sure to look for Hunnic city list, not Hunnic city names, otherwise the search function won't find it.
I find the feature of the name stealing a nice idea, but in the game I still prefer to see the Huns have their own city names.
I think a mod giving the Celts historical Gaelic city names (instead of modern English spellings of big contemporary towns) would be popular as well.