I'd highly recommend you take a look at Doug Ritter's RSK Mk3.
http://www.equipped.org/rsk_mk3.htmIts not carbon steel, but it is a superior semi-stainless S30V steel. Fantastic stuff - same steel used in the Mk1 folders.
Great steel, great tough handle material, excellent blade shape, decent sheath.
Its also not a 6" blade, but a good camp knife doesn't need that long a blade.
The Mk3 is designed to be used, but it is a beautiful knife too.