I think it is a LARGE amount of static that causes problems, not what we experience in handling small quantities in reloading. I would think plastic is better to protect against moisture anyway.
I'll look up the Vita-Mix and compare to a unit I saw in Kmart the other day that would grind coffee beans ($16). It seals everything away from the motor and air exposure.
And I'm not fooling with anything but these 3 basic components- simplicity is best in my book. Needing another component to make a special priming powder would be defeating the purpose if it should become hard to come by.
Finding a local supplier of BP is impossible anymore, because of the dang the shipping fees and regs. I'll just make it myself then.