You have told us, that you live on the road with only a ruck, that you wont carry even the smallest sharpening stone because it will break and that the Fällkniven DC3 diamond stone 'will be worn out within a year.' You also posted that 'ounces count' but you want to carry a six inch knife (and you worry about the logo for some reason)?
As low weight is of paramount importance to you and as here is limited room in a ruck, might I suggest a three inch fixed knife like the ESEE3 or maybe a light weight folder.
As you live the life of a hobo, it a smaller knife might be better for several reasons. We all heard about that Vietnam vet who travelled on the road with only a ruck and who got hassled by the local sheriff and even the National Guard, when he sauntered into the small town of Hope, Washington. He happened to be carrying a big knife and got into a spot of bother for a few days.