As far as the circuitry ghosting effect I think it's a design flaw of the PK06. I can reproduce it at will and in bright sunlight it can be very bad regardless of the distance between the optic and the eye. I think it's because of the lack of sunshade or hood and if it had one like the Kobra I doubt it would be an issue at all. The effect is apparent in most all lighting conditions (the circuitry reflection is there but very faint in overcast lighting) and is particularly bad in bright sunlight facing the sun.
Having said that I think the optic is interesting and has potential. I'm thinking of how to build my own sunshade for it.
They do fit on the AKSU with Stormwerkz rail