Tough sh!t.
Cops exist to "protect and serve", not "intimidate and dominate".
If a cop cannot tolerate the sight of an armed and peaceable citizen, then he or she needs to find another job. Period.
As for "not seeing" your weapon, bonehead legislators have made it so that it many states, open carry is the only "legal" way to go.
Personally, I prefer going concealed, but I like our Right to open carry being recognized also.
Cops will use any and all tactics available to protect themselves.
I'm not defending them, because for the most part I think they get a little TOO nervous about it, but what's the solution?
Essentially, you have the right but are intimidated out of exercising it.
They sure aren't going to pass a law saying that cops CANNOT treat an armed person with extreme caution, and question them at will.