I am seriously considering a Casati Laser all steel frame for my next/last bike. I like the internal cable option, which is accompanied by a "hidden seatpost locking device". Does anyone have a picture of that, or a good description of how it works? It surely does seem to streamline the seatpost in the pictures I have seen of the frame. Unfortunately, none show any detail.

Thanks...Gary

Is it Bic-able?