Ok. I did not purchase this for work mainly as a glimpse into what the future of mobile computing may be.
Having said that.
I am at work now and my iPad is in a dock. Playing random pics in a slideshow while rocking to iTunes (which has always been able to run in background).
I purchased Apple's "Office" (Keynote, Numbers, and Pages). Still a work in progress...but.
I have MSDS and Technical data sheets of all my resin products on it. I can show them to customers, print (with work-arounds), and quickly access them while I am on the phone. Better than pulling out a 3" 3-ring binder.
I have tiered price lists for all my products. I can access them anytime I like...again...no pulling out a 3-Ring binder. I can also select 'which' price list to use. So, if I am at customer A who has a 15% discount due to purchase quantities I can pull up pricelist "XXX15" and conversely if I am at a customer's who only gets 5% I pull up "XXX5" pricelist.
And then there's the scheduling, Exchange push email, contacts...etc.
Right now trying to get Bento up to speed. Loved it on my MBP...it's "meh" on the iPad (very simplistic version).
I usually keep it docked and have an Apple BT keyboard to use it while on my desk (along with my workstation).
I am amazed who easily this can be used for business...it was a 'drop in' fit.
As far as the 3g. Personally ATT can suck it. Removal of the on/off contract option only 27 days after release was a real "FU" to me. Not only that but I am in a big metal building where ATT reception is 0. My company just switched to Verizon which, not only works great inside, but has true unlimited data plans for $29.99 (
http://www.verizonwireless.com/b2c/splash/plansingleline.jsp?lid=//global//plans//individual ) that can be 'shared' using a cradlepoint (portable wifi hotspot). I got a free blackberry when we switched and purchased "Tether" ($49) so I can use it as a USB or wireless modem for my laptop. If you actually sign up for a tethered connection or pick a phone that comes with a wireless hot-spot built in Verizon will cap you at 5gigs.