So I cannot access iDisk within the app on the iPad itself? I still need a PC?
If I recall correctly, Airshare does plug into iDisk, however I don't know if Airshare stores the files locally or if you have to pull them from the cloud everytime. Either way, it does eliminate half the steps.
Mind you there is no way on iPad to save to another application at the moment, so you'd still need to do the whole export then move back to iPad thing when you're docked.