QUOTE (Shadowchaser @ Oct 16 2007, 10:27 am)

So it's the security check people you have to worry about? Not the ground staff who board you on the plane?
Its both. Depends on the day, mood of the airline staff and whether the staff spots the huge handluggage you are trying to hide from them. Its in the interest of the airline to ensure you comply with the regulations, otherwise you may cause hassle to their schedule and delay or even miss the flight. I'm not sure, but it could also be that the airline needs to comply with the security regulations or they get in trouble with the airport. Also if you are overweight, the airline can charge you excess baggage, so its also in the interest of the airline to spot too much handluggage.
So the first step is getting passed the airline staff, the second step is security. Security is now far stricter than ever, so they are probably the harsher ones at the moment.
Years ago you could get away with a lot more handluggage. Now you run the risk of being forced to check it in and pay excess weight charges.
In answer to your question - feel free to try and get away with too much handluggage, but don't be surprised or annoyed of the consequences as it is likely you won't get away with it. Far easier and more relaxing to plan ahead and pack appropriately.
Maybe some airport/airline staff can clarify further, but this is based on my experience of flying frequently in the past 10 years. Mind you I managed to break practically all the luggage rules over the years, but that was with someone at the airport I was departing from willing to take the excess back to their place if I didn't manage to get away with it!