I don't agree they look totally 'non-human', since they are able to pass as human security consultant with little to no changes to their appearance. Heavily augmented, but human enough to pass with little more than a heavy sweater/hoodie and a cap.
Honestly, i love the way everyone of the Corporation Rim dismisses Preservation, they are a bunch of backwater hippies... and the fact they do have a working and strong economy just shows how wrong the CR is.