Bike shoes for pedals with clips?

This may come as a shock, but I find myself in need of replacing my 15 year old bike shoes as the sole is starting to come apart from the upper.  I only have one bike (an old steel frame touring bike) and that's the way it is going to be for awhile.  This bike serves as my commuter, my going to the grocery store bike, my long ride tour bike.  I really don't want to go clipless because I like the flexibility of being able to hop off my bike and walk around a store or down a trail or wherever.  BUT I do find stiff soled bike shoes much more comfortable then biking in sneakers.

So since I haven't bought shoes in 15 years, I'm sure there are some changes.  Will any bike shoe work on regular pedals?  Are there some styles that will work better than others?  If any bike shoe would work, I was thinking about getting triathlon shoes so that I don't have to buy more than one pair if I am able to compete again in the future.  Right now, I don't want to invest a lot in triathlon gear because I might have to give up running.  I don't think that is going to happen, but it might.

So I am open to bike shoe suggestions?