As far as the placement of the security cord - I think the person that mentioned it looks like it is corded, hit the nail on the head. If you place the security cord on the top - it looks just like it is a corded mouse.
Not to mention it would defeat the whole purpose of having it out on display for people to try out. I would imagine it would be quite difficult to try and swipe with that nub that attaches the wire in the way. And it would be on top of the touch sensors. Look at the teardown pics and you'll see that where they've placed the security cord is on the part of the mouse that doesn't have the touch sensors under the surface.