In the short term, I think i'd go with sortof a Casey Jones look-- several aluminum bats in a bag I can keep on my back as sortof a sheathe. Not the most effective thing you could use since it's not going to hold up forever, but I don't own a gun (or a morningstar) and going to a gun store during the initial mass panic sounds like a great way to get shot. Once I had a chance to get a bit more organized and things were more deserted, THEN I would find something with some range to it. Even then it probably won't be anything fancier than what I could find in the sporting goods department in Wal-Mart, partially just so ammunition will be easy to find as I go.
I really like the morningstar idea, but where would one FIND something like this? From what I've heard the average replica weapon isn't very durable (yeah, good like with those katanas guys... there's a reason I'll be leaving my klaive behind when the outbreak starts
) and I don't think I've ever seen even a replica morningstar. Do you have a museum nearby that you're going to go raid or something?