there was a show a while ago and it was burglars turning up with high viz jackets and clip boards and nobody notices. Its a mazing how much attention you pay to someone lurking when they look dodgy but if they look unthreatening nobody could remember a thing about them.
i know what you mean though, there are load of my customers that just dont do enough checks. It is frightening when you see how vulnerable they really are. Its sickening but these are the people burglars go for, if its a young guy, or bigger guy they wont go near encase you return.
I have had some customers over the years, that have said I have to go out can you just lock the door behind you, when doing there windows in and out, and never though anything of it.
I do wear uniforms and make a point of disclosing things like my address on letters etc, so expect people to be more relaxed with me, but for all they know it could be just a front, just look at that guy on that show about con artists that was posted the other day.