Did It Help You Get a Lot of Work Done?
Yes, thank you. The ergonomics of the keyboard case and iPad combo were superior to those of a netbook, and that includes a netbook with an external mouse attached. Part of this is down to the keyboard being nicer but a lot of it is the iPad's touch functionality.
On my first trip with the ZAGGFolio I used my hosts' laptop to print some e-tickets and found myself myself poking ineffectually (and much to my hosts' chagrin) at the screen of their laptop instead of using the touch pad. I'd become used to combining the iOS touch functionality with an external keyboard that fast.
The limitations at this point were down to two things: size and, ironically, iOS functionality. The first really can't be increased without making a mess of the scenario we started out with: traveling light. The adjacent picture shows how the keyboard just about doubles the width of an iPad in a case offering equivalent protection. Doubling a third of an inch only gets you to two-thirds of an inch. It still got tucked into my bag without any effort. The difference in space resulted in having to leave behind a single undershirt.
The other limitation is more significant, though highly dependent on how you'll be using your iPad and keyboard, netbook, or small laptop, as the case may be. iOS isn't a full-fledged operating system like Windows or OS X. That's not all bad, since a full sized OS would have you carrying a lot more processor, cooling and battery around, not to mention waiting for said OS to boot. But if you were planning on really sinking your teeth into some Excel or PowerPoint you are going to be stuck with one of the workarounds out there, either by iPad or web delivered app.
This point is mitigated by the fact that you probably don't wrangle your big spreadsheets on a tiny screen anyway, be it netbook or tablet. Also working in your favor is that new apps keep appearing and old ones keep updating, so software functionality in iOS will continue to improve. It's just worth keeping in mind that if you plan on pricing derivatives or doing some computational fluid dynamics you may need something with a full OS, but you probably want something with a bigger screen and beefier processor anyway.