Welcome to OCDO and the world of gun ownership.
Your question about carrying with a round in the chamber or not is probably only second to which caliber is better with regards to starting open warfare. I happen to belong to the camp that says you will need that 1.3 seconds it takes to rack the slide to do more important stuff - like shooting, moving, figuring out what is happening, etc.
Since even your plastic fantastic (OK, so I'm not a Glock fanboi) has several internal safeties - along with that strange double trigger thing - it is not supposed to go BOOM! until and unless you pull the trigger, so carrying with the chamber empty to avoid the possibility of an AD (accidental discharge) is not supposed to be necessary.
Mostly what I see/hear, especially from those new to gun ownership/carry is that they are uber-aware of the lethal potentiality of the instrument and want to be very cautious to prevent an accident. Think of it this way - if you just bought your very first hammer would you carry it with the head detatched until you were going to nail down something? No, a hammer is designed to have the head attached at all times. A modern handgun - even a Glock - is designed to be carried with a round in the chamber.
Look around the Virginia subforum to find an OC dinner or other event near you. Go and meet some other folks. Become active on the OCDO boards.
And join VCDL www.vcdl.org !