Yes and no.
Edge sharpening will probably start a big discussion/argument.
No, your little Dakine tool (which many of us have) isn't completely useless, but using it to really maintain an edge that sees a lot of abuse would be like trying to paint your entire living room with an artist's paint brush.
It can be done with enough effort and elbow grease, but it isn't the most appropriate tool for the job if you're trying to keep the edge in the best shape it can be in.
Read on another forum: "If someone held a gun to my head and said, "You have to move to Salida tomorrow", I'd probably do it. If they told me I had to go to Breckenridge instead, I think I'd just let them pull the trigger."