Well, I am 50/50, sometimes 51/49 and sometimes 49/51!!
I think they both have their pros and cons.. lately I have carried a m4 mini Ritter.. I like the looks of the black blades on certain scales.. and I definitely like when the coating starts to wear, and the knife gets that "well loved" look..
BUT!!, I also like the m390 mini Ritter with the stonewash that does a great job at hiding usage..
So as you can theorize through my rambling, I think both are great!
***TO the OP, coating does provide corrosion resistance to the blade. But not all steels need the protection.. so it all depends on your steel.. the 943 comes in s30v which has great corrosion resistance. So basically the choice comes down to what you think looks better on that particular knife.. my opinion on the 943,, I like the all black setup with only the blue spacer!! Great knife, hope you enjoy it..