While I don’t personally own an iPhone, iPod or iPad, I borrowed my wife’s iPod Touch to check out the AutoCAD WS. I found the program a bit hard to use on such a small device. The program got confused when there was numerous objects where I wanted to zoom in closer. I found the user interface on a normal desktop a whole lot more enjoyable. It was easier to zoom in and select objects for modifications.
My biggest disappointment is the lack of compatibility with Civil 3D objects. My computer which has Civil 3D is down, but I suspect if proxygraphics is set to 1 AutoCAD WS may show the underlying primitives instead of boxes. Another nice feature is the versioning. You can make changes to the drawings and save them back to the server. The program then allows you to go back and view older versions of the file.
As well as being installed via the Subscription Advantage Pack, the WS Plugin for AutoCAD and AutoCAD based vertical products is available from the AutoCAD WS website. It may have sounded in a previous post of mine that it would only be available from the Subscription Advantage Pack.