Well, it’ll get the job done for you. 
But we’re geeking out here.
Try cutting medium-soft cheese with that, and then try with an equally sharp hollow-ground knife, and you’ll almost certainly notice a difference. Then try a late summer tomato or a sheet of folded paper standing on edge with the same two knives… but for most jobs, sharp is what you want, and the grind profile is really not critical. And 320 grit with a belt grinder will get you plenty sharp enough for kitchen work.
But just for comparison, 320 grit won’t get you sharp enough for a serious framing chisel, and it’s overkill for the average woodsman’s axe or foot adze.
A soft platen like that will be a lot less noisy than my steel one! Good hack.
