Sap, salty water and similar mark the 'raw' blades unless you look after them. As a long term field knife or trail knife the coated version would be easier to maintain- the LE would get marked up unless you could clean it and lube it properly, which would mean carrying more weight (kit) around. As a day use rather than trail knife take and enjoy either... (In all honesty given a year or two of hard use I think all Scrappers will be 'nekkid' dull silver all over anyway...)
The S6 is still the best field knife out there though. (But Jerry may disagree).