Overkill? I find the sharp point handy for several reasons. First of all it is easier to start your cut exactly where you want it. And if you have ever had to impression an old Renault or Fiat you will really appreciate the sharp point.
But with that said, my usual method of dulling the sharp point on an impressioning file is to drop it. The manufacturer has designed the aerodynamics of these files to fall with the handle end down, bounce up just high enough to make a gentle 180 degree arc and land precisely on the sharp point.
Of course having just ponied up the bucks for a fine tool as this your first instinct is to use your boot to cushion the blow and your second instinct is to cry out in pain as the hardened point pierces the leather of your boot, the thin skin of the top of your foot, and then snaps off in one of the 26 bones of your foot. Not to worry however, it is such a small chunk of high carbon steel that it only takes a few weeks to dissolve and your body needs all of the trace elements anyway.
Note to Steve Paris. You really ought to stop hosing your keyboard with coffee expended through your nose.