I am thinking it would depend on the CF job. I am thinking the CF on my TGLB would be better than DC as it is a very slick finish.
As for treating I polish with flitz then do a coat of flitz wax. I have never had any rust issues not even on A2 Bark River blades.
I have also heated a blade or two with a hair dryer and applied Miltec-1,had no rust or patina issues with that either. Not sure how food safe the Miltec-1 is. Most of the time I do not worry about food safe lubes as they are wiped off before I cut food with them but the Miltec-1 does bond into the steel and is released from the steel as it heats up.