Underneath the thin post-apocalyptic setting, "Steel Dawn" is a standard "drifter fights the bandits" western. It has plenty of western cliches (e.g. a widowed pioneer woman whose farm is at risk) and plenty of action. I don't recommend renting this movie, but if it comes on TV you might consider watching it. It's better than any apocalyptic film that Kevin Costner was involved in (or will be). But the only characters with a glimmer of originality (such as Swayze's old mentor) get very little screen time. This places "Steel Dawn" a few notches below the gold standard of apocalyptic films, "The Road Warrior."
Review of Steel Dawn
