Problem is Ref, I don't think a plate umpires shoe would work real well. I can see it really cutting into your mobility and I don't think they have much of a cleated sole from what I can recall.
You might try a police supply like Gall's. Won't be cleated but might find something with an "agressive sole".
Hey check these out:
http://www.galls.com/style.html?asso...SP773&cat=2807