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Should work fine with a little care. I beta tested the midern zombie apocalypse version of the rules last October. I wrote a lengthy post on my blog here:https://miniaturescrum.blogspot.com/2017/10/run-from-dead.html
A month or so ago I saw a post from him saying he was wrapping up Run from the Dead for release, so it seems imminent. The core mechanics seemed identical, having played both, but the modern version has some rules for handling modern weapons and vehicles (as well as all sorts of zombie-specific details, such as monster stats, etc.).
And I agree, Northumbrian has a lot of brilliant miniatures.