No we dont call PSP or anybody on a regular basis, usually have to have some mitigating things going on to call the locals. PSP would only catch a imposter if they checked ID and I am assuming they would if the guy wasnt in uniform. From Potterco's post it sounds like he knows this guy and has seen him before.
Another thing I dont understand is if this happened in October why wait till now to post? Most folks would be so flippin mad they would post right away.