The SI-EVT seems to use the sales code DFQ for both vehicles, but with different part numbers, so it seems that they probably are the same, just with different cases to mount differently between one and the other, if not because different part numbers are sold elsewhere in the world.
Also, light research showed me a picture that is a 3D rendering of the Grand Commander's hybrid drivetrain without any driveshaft. Judging by how many articles report the GC's PHEV only having 2 electric motors, and with the SI-EVT having 2 motors within it, it's safe to say that the Grand Commander PHEV is only a FWD hybrid.
Also, light research showed me a picture that is a 3D rendering of the Grand Commander's hybrid drivetrain without any driveshaft. Judging by how many articles report the GC's PHEV only having 2 electric motors, and with the SI-EVT having 2 motors within it, it's safe to say that the Grand Commander PHEV is only a FWD hybrid.