Is the choppyness of the animation some kind of esthetical choice?Otherwise I vote for INBETWEENFRAMESOHMYGODILOVESMOOTHNESSYes.
I think for theoretical playability that walk animation would be horrible. With a bit of speeding up it would probably be much better though; it's just that playing a game where you move at that speed would be quite boring.