Here's my main point on Cyberknights, is just a point about the (albeit meager) PF on what extent you can cybernetically enhance the human body in the EVE universe.
In The Burning Life, the characters mention that there is basically a maximum the human body can replace meat with metal, that the more you replace, the overall less effective the body becomes. The described it as a "rule" or some such. (Im at work, and dont have a copy of my book with me, I'll find the exact page if someone needs it)
In short, cybernetic enhancement is a yes, full on cyborg is a no.
Or at least, full on cyborgs exist, but they're more like mono-task servitors from 40K than Ghost in the Shell. In any of the Chronicles, the most ive seen a character modified is an Amarrian who has two cybernetic arms, and he's actually killed by a non-modified human.
While I know this contrary to a lot of player created fiction out there, and im sympathetic to that, I just wanted to point out where the PF is on this.