memory wire -- great idea
The design I built a couple of times is a direct copy of the DPA 4066 ... boom the mic under the ear rather than over -- maybe a subjective opinion, but I think it looks better than over the ear.
Also, check out Tool-Dip or Liquid Electrical Tape, which you can literally paint onto the wire to pad the cut ends and the over the ear hook. Plus, this stuff doesn't slide so it should hang on better.
And please post a pic of your headset if youcan (I didn't take pics of the ones I made in the past :|
Thanks. John