Do ADE2.0 and even 1.7.2 not work on surface pro?
I appreciate thay are probably not touch friendly or appropriate to the metro/modern usage.
(But then they are pretty unfriendly even for the machines they were written for.)
In general there no ADE implementations for tablets; it relies on support from third part apps such as Bluefire, Aldiko and Overdrive.
There were no Windows tablet apps for a long time; there are now DReader and DLReader, which I assume will work on surface pro 2.