My thoughts on the unconstitutionality of most (if not all) federal law enforcement notwithstanding, I don't oppose any police officer being armed for self defense. When all the cosmetic trappings are stripped away, a police officer is a police officer, no matter the origin of the law he is enforcing, or the power he is commissioned by.
Police officers have to conform to the same rules as anyone else when employing deadly force (imminent danger of death or serious bodily injury), so why shouldn't they be able to choose the best tool for their circumstances, just as we argue we should be able to?
Dave, I'm not sure of the point of your article. You dance around a few things but fail to come to a point that I could pick out. What exactly is your objection to police officers being armed with guns?