I'm going to play devils advocate here for a while...
Dewey coated rods are ok, but if you use one for any period of time, you will notice that the coating on the rod will get scratched in a spiral pattern that is consistant with the rifling in the barrel. I believe that the SOFT coating on the rods will pick up grit and dirt during the cleaning process and act as a lap, and possibly damaging the rifling when you are cleaning your barrel. The other problem i have with the Dewey rods is the poor quality handles on them. Eventually, the handles fail to rotate the rod properly, so that after about 4-5 strokes the cleaning jag unscrews from the rod, staying in the bore.
Right now i prefer the PRO-SHOT Stainless steel cleaning rods. THey are Micro-polished and will not embed dirt and grit in to the rod as will coated rods and aluminum rods.
Here is a link to their site.
http://www.proshotproducts.com/page3.html
The biggest problem with cleaning rifles is that people use improper methods to clean them and end up cleaning too much and actually doing more damage then good.
Wha6t ever you choose, coated or non, always use a boreguide and always clean from the breech.
KyARGuy