With the number of switches we have in production, I prefer to have the banner in play. I put in the IP address, physical location. MLT info, etc, all on the banner, so when you are SSH'ing or accessing the switch via EDM, you can see you are on the correct switch or not. This is most useful for field service (Desktop types) people needing to activate ports for remote users.
It's nice to know if you need to run scripts the CTRL-Y interferes with, 'banner disable' is the easy work-around!
TankII