I've been using various Salts as my work/utility knife since they were introduced, currently a PE Tasman. My work (pizza place) involves a lot of opening boxes (which the hawkbill excels at) and plastic bags full of wet and greasy food. It's nice that I don't have to worry about keeping the blade free of gunk for fear of it rusting up.
In my experience, the plain edge sharpens easily but doesn't hold a razor edge for very long when cutting cardboard, but maintains a working edge alright. Serrated H-1 blades hold their edge much, much better.