I am pretty impressed by the Jewel stick. I have carried the 2 sided flip stick for about 8 or 9 years in my hunting pack.
Its the perfect addition to my sharpening process. I use it to put the finishing touches on my broadheads, two blades and three blades. i carry the small flip stick in my day pack or quiver and i use the large 12 inch by 3/4 three sided stick for camp or home.
I have become so impressed by the Three sided sticks, know as the 1-2-3 's, that i am going to pic up the line as distributor in the next 6 weeks.
In a recent test on a knife I carry with 134 CM steel, three passes on each of the sides: coarse, medium and fine and the knife was shavin sharp.
I have spent quite a bit of money in the last year searching for the "best" sharpening tools and techniques and the Jewel Sticks are an excellent addition.