As far as the interaction goes, besides being a "training" video, i see nothing out of the ordinary for gun store interactions. Questions were asked, answered, etc., and I can see where gun sales are concerned, it is a gun, but in a sales shop it is primarily a sale. Shops are typically very lenient as far as gun handling goes, I browse all the time for entertainment, and they typically check the gun as they first take it out of the display, and then you damn near have to point it in their face before they will say anything about safety, because the sale is the primary objective.
As far as safety goes, if I am in a store, I keep an eye out for guns in my direction, and will correct anyone if I am swept, and I personally keep safety practices in mind. Double at a range.