Back in the days of old when.dinosaurs wandered in our back yards and mobile connectivity meant tethering off your cell phone via a sync cord, it was a hassle in getting everything set up.
The 3G sim card in the iPad makes working on the Internet seamless as it is as simple as dragging out your iPad whenever you need to work and hitting the sleep button when it is time to move on. You can continue your work anywhere and anytime.
Right now I am touch typing on the iPad's on screen keyboard albeit slower then my normal keyboard but certainly quite usable.
However with 3G turned on I am automatically connected to the internet when I turn on my iPad with no cords attached; it is all self contained without having to switch on a separate device or creating a connection. It is simply a joy to use.
Right now I have 7 days remaining on my 3G monthly plan and still have 4Gb of data usage left. I have spent 2 hours at McDonald watching a movie streamed by air video from my home server, downloaded dozens of apps and surfed at least a dozen websites using a grand total of 230Mb of data. 5Gb is a lot of data if you are just generally surfing the Internet.
Having 3G on my iPad is certainly a luxury but having it may soon change my working habits as I sit at McDonald or star bucks more often.