Aprons whilst serving food

This question is posted on the N&MW network...Would welcome your expertise on this? Are clean hands more important?

Hello, 

I have a question regarding the use of a plastic disposable blue aprons for serving food. Our food handlers/catering personnel are wearing clean scrubs and do not have any other patient contact. As long as their hands and uniform are clean, what is the purpose of the blue apron? It could be another piece of extra plastic we could discard. Any ideas/critiques/suggestions welcome! Many thanks