Well, depending on the finish you want, it might be more trouble than it's worth. Chroming something means it has to be SUPER CLEAN and fine, i.e. tons of polishing work before you can get it done to keep it from looking like crap.
Vac metal is a little easier, but it can be a little expensive depending on the company.
You just need to decide if it's something you want to do for the props. If it's something that you want to do and it's in budget, then I suggest going for it. Shiny things are always cool.
chris