Select all the objects how ever you like >channel box>devisions 0 = all objects unsmoothed. In theory this would be a really easy shelf button to make so you could toggle between smoothed and unsmoothed, but I'm sorry I have no mel skills.
Uh, no. I'm saying its annoying having to select little accessories individually to see them smoothed, hence wanting to group them and smooth the group because when I want to unsmooth I have to go around to every object and turn smoothing back to 0. Explained it enough for ya?