I have ONE serrated folder in permanent rotation and it is a Pacific Salt. I'm usually a plain edge guy but I couldn't deny it's ability. When I received it, the scallops were able to whittle hair. I couldn't believe how sharp it was. I've maintained it on the SM, may not be hair whittling but incredibly sharp nonetheless. I'm gonna take advantage of Spyderco's free sharpening service soon, and ask them to get it hair whittling again lol... All the while getting the H1 harder: H1 is a little unique as it absolutely excels at serrations since it is work hardened and the grinding process to produce the serrations hardens the steel north of 65 rockwell. It will stay sharp for a looong time and if you have a SM, you can maintain a phonebook paper sharpness if you want.
I've put it through a wide range of tasks: A dang steak knife (for kicks), impromptu bread knife, yard/garden work cutting stems roots weeds flowers fruits, cutting hoses and zip ties etc when fixing my cars, breaking down an insane amount of cardboard in our warehouse at work, taken it on vacations to Thailand-Hawaii and used it as my only knife there...beach/kitchen you name it, took it camping and stayed in my pocket in Yosemite.
Spyderco was the first to put serrations on folders and it has been in their wheelhouse from the start (think Police, Endura, Civ, Millie etc). The scalloping pattern evicerates and tears through with ease. Not the "neatest cut" producing serration pattern if you care. The Pacific I own is strong (lockback), three ounces, and very thin in the pocket... All this equates to pocket time. It's even my first option to carry when I go IWB wearing sweats or basketball shorts.
Oh, and it doesn't rust.