I have both sizes. I have used the 6.5 every time I need a kitchen knife. The 9" I bought with eBay bucks, but haven't used it as the 6.5 does everything you could ask of it and more. I have used it for countless things in the kitchen including cutting vegetables, cutting up deer steaks from a freshly boned out deer, carving Thanksgiving turkey and lots in between. If your a CRK fan, it's a must in the kitchen and just one more excuse to use a CRK for damn near anything...!!!
I am going to make a custom knife block to house them both so they are easily accessible. I will add that I have the Right Hand versions.
I emailed CRK about sharpening them and they gave me instructions on how to use a Sharpmaker for sharpening them. Worked to perfection....!!!