Nothing wrong with display models. The first priority is that it is a solid brand and model. Any handling or small dings are almost meaningless and can be accepted and used without reservation, within reason. Teeny scratches can sometimes be used as haggling fodder to get them to come down a little.
One of my LGS has a nice spread of Wilson Combat guns in the case. One had a deep idiot mark, unacceptable for a pistol of that price.