I considered all the mounts on the market currently and some are great and some are impractical, in the end I decided to go sans optic. Instead I chose to mound a handgun laser/light combo, the Viridian X5L. As a bonus it also acts like a hand stop!
I kinda lucked out cause this little bastard didnt properly fit my PPQ and didnt have a pairing for it until I acquired the S2k. Its almost like it was made to be.