Pay attention! I didn't say anything about registration distance, height or anything in the link with the posted pic. That discussion was in previous posts about registration.
It was just a comparison of the overall form. The whole thesis behind the pining for an EVIL body is a small interchangeable lens body. Apparently the vampire movement is behind it and they are scared shitless of mirrors.
70% of the people that buy one of those aren't likely to know the difference from an interchangeable lens mirrorless body and a dSLR.
Furthermore, unless that is an aps-c sensor the 14-45mm lens isn't going to be equivalent to the 18-55 kit lens you show there much less a DA 21, DA 40 etc.
You free with a qualitative term like "quite a bit smaller."
Edit: One more time, the point I've been making isn't out of the realm of possibility to make a k-mount aps-c EVIL or L type limited lenses to a 28.8 registration distance. The prism wouldn't be there in either scenario. Do you want me to get out the crayolas? In other words, its about the feasibility. Any one that thinks Pentax should water down their K-mount needs to check into drug rehab.
That would probably be bad for Pentax just like Sony's ff fiasco.