I have never been involved in an evacuation. Thank you to the stars above. However, each year at our requalification sessions (and all f/as at all airlines in the U.S. must be re-qualified each year) we have to prove we know all of the evacuation commands for every a/c on which we are qualified word for word exactly as written in the manual. We have to demonstrate that we know how to open a door on every a/c on which we are qualified in the "armed" mode--armed meaning that when the door is opened the slide will deploy.
Each airline develops its own evacuation commands because the configuration of a B737 at AA may very well be different (probably is) from a B737 at WN or DL. However, the FAA must approve the commands as getting the job done. I am willing to go out on a limb and say that every airline has some evacuation command that imparts the thought that you are to come to the evacuation door empty-handed. "Don't take anything with you." "Leave Everything" or some such. Every airline has procedures for dealing with passengers who fail to follow those instructions.
I am also willing to go out on a limb and hazard a guess that the FAA requires such a command of every airline. The dangers of puncturing the inflated slide with a piece of luggage--particularly wheeled luggage--are obvious. Once punctured, the slide is useless.
Let me say that it is my fondest wish that the day I retire from AA I shall be able to say, "You know. All those drills--evacuation, first aid, CPR--we had to do at requalification each year were a total waste of time. I never needed any of that stuff."