Sharpening wine key knife

[linecooklife]

Anyone ever try to sharpen the little knife on a waiters wine key? If so what did you use? My main concerns are that the edge has a concave curve and is serrated. How would I go about doing this?

 

[ThEoRy]

Corner of the stone. Leave it at like 500 grit.

 

[daveb]

The expression "Just because you can do something, doesn't mean you should" comes to mind.