You might like these. Flat on one side and MTB style on the other:

http://www.performancebike.com/bikes...1586500_400048

If you are mostly just tooling around campus, you don't really need to clip in at all. Just wear normal shoes. And if you aren't doing any major rides on the weekends, you can simply get some cheap MTB shoes and clip in. My wife has these on her bike and they are just fine.