I have one of Ben Dale's EdgePros, and it's far and away the best system I've used for sharpening. He will make a custom carry case for you for an additional charge.
EdgePro
Here's a selection from his website:
Developed for my own use on a commercial knife route, I built 100 prototypes and sharpened over 100,000 knives over a 10 year period.
My father taught me to sharpen, and I have always been fascinated by it. Whether I was working in cabinet shops or restaurants, once my co-workers discovered my talent, I was always the one they came to for sharpening.
One night in 1982, I was sharpening knives for a friend who owned a restaurant. Jon Rowley stopped by to deliver fish and saw my work. He told me, "if you will come sharpen my knives once a week, I will get you all the customers you can handle." So I did, and he did, and I was in the sharpening business. But working by hand was too slow. I began working on a better way. For years, I just kept sharpening and designing. As the Professional reached maturity, customers on my route wanted to have one of their own. Once I had the stones perfected, Edge Pro was born!