Yes, it should fit both the XD-S and XD-E.
I have this, the 63110 model, and the sight is too small for the dovetail on the XDS 45
All these so-called "Experts" here who say the M63110 FT Bullseye will fit the Springfield XDS slide dont know what they are talking about. I bought this sight for my XDS and the dovetail groove was too wide for the sight, and I had to return it.