Anyone here have any experience with the 10-8 Performance rear sight for the PPQ? I'm giving serious thought to ordering one to mount on my PPQ M1 5". It looks like the sight drifts into the same dovetail as the factory sight, but I can't tell whether a sight pusher will be needed. For those of you with experience with these sights, how was the installation process compared to say, a Meprolight or Trijicon rear sight? Is this the same height as the factory polymer sight? Any help is appreciated.