I got my new JIS Screwdriver set yesterday...it looks great.  In retrospect I would have saved a few dollars by not buying the flat blade screwdrivers as there doesn't seem to be any difference in those.

I have learned that the JIS screws are marked with a DOT stamped into the head.  If you buy metric screws at a local hardware store to use on your bike, chances are that they may be Phillips head with metric threads.

Here is what the markings look like on JIS screws.....a punched dot.

and the shallow flat spot in the middle of the X is obvious to the eye.
I Have stumbled on and acquired JIS,, I think some sewing machine came with some,, but, a good Philips and some time on the grinder,, Bingo,, I Usually work with the magnetic, replaceable  tip type, so, if I mess up,, I can toss it. An empty mink oil tin of phillips heads,, 1's and 2's.. meeeeeh,, no sweat.. The Harbor Freight hand held impact Np Longer comes with that long skinny tip that SO perfectly got the screws Down In Yonder, I dont think,, BUT, anyone looking to Tool Up Needs one of those. And dont be afraid to take it apart and clean up and lube the ramps.