mm:
You win the prize----- You seem to one of the very few who have actually made an attempt to answer my question.
I honestly don't care how easy it is to get the tool. The inconvenience of driving to HF, or Sears, or ordering on the Internet is in itself enough deterrent. And as you stated, guys who love tools and / or likely to have the tool back at home, are not going to remove the screws or take it apart just for fun; but if they have a *need* they will get the tool and open it. Which is OK with me.
Thanks to all who replied.
Phil