I wouldn't do anything out of the ordinary if I were you. Like any other quality knife, keep the blade sharp and don't wait for it to get dull. I wouldn't worry about rust on the epoxy-coated sections of the knife, unless you manage to scratch some of the finish off. Otherwise, use something like Birchwood-Casey Sheath, some Militec-1 or just some good old BreakFree (sparingly.)
Like any other knife, if you're gonna be getting it wet (especially in salty water,) wash it and dry it thoroughly and use one of the above to prevent rust. Long-term storage? Apply a thin film of any good gun grease to the edge. I hope this helps