I am afraid that the EyeX does not support mounting on anything other than the standard magnetic monitor mounts. As you pointed out, the Tobii Pro range of trackers does indeed allow this type of configuration but is not compatible with the EyeX (or C4).
That being said, a number of users have had some success in alternates mode of mounting to accommodate larger (or curved) screen.
A good thread is here @ http://developer.tobii.com/community/forums/topic/ultrawide-monitors/
Perhaps the user technique can be adapted for your needs.
Regarding the magnetic plates, yes they should work with the EyeX as well.