I have a macbook pro and an iPad 2. I tried to use iPad 2 for work when I am out of the office but this is not very comfortable since one has to sync documents, not all Os X Lion apps exist for iPad 2 and so on. I think a solution would be a single tablet device that at the office can be connected to some dock station and then I have the equivalent of my macbook, but when I am out of the office I can touch the screen and used the same applications while on the road.

As far as I know the iPad 2 does not and will not allow this. Therefore I wonder if you could recommend me another hardware/tablet/etc that could work this way now as of March 2012.