I have been tinkering with the idea of buying an edgepro. Currently all my sharpening has been done freehand with good results. However, I'm growing impatient when it comes to reprofiling and I basically want a much sharper edge in less time. Almost all of my knives are utility folders but I realize the edgepro was designed more for kitchen cutlery. How well does it work on folders with serrations and blade lengths ranging from 3-6"?