Every time you do a press check is an opportunity for an accident to occur. Placing your hand in front of the barrel is not a good thing. That is why I have mixed feelings on doing them when they are not required to make sure the gun is UNLOADED. You are better off to fully rack the slide with the mag out to insure that there is NO round in the chamber and visually check.
Why would you put your and in front of the barrel to do a press check? There are safer ways.