Received the unit today and haven't mounted it yet.
DPP footprint but deck height is low enough to use with irons unlike the DPP.
Dot is crisp and window tint less than a RMR or Holosun.
In addition, the window is about 15% larger.
One major problem though that I am seeing is that although the footprint notches/holes are the same as the DPP, the sight itself is much larger. It will not fit the factory DPP plate for the M&P CORE so I will have to find another mounting solution or modify a plate.
I also doubt this would survive a shoulder height drop test as the window shroud is pretty thin.