AS is an evil company, you really should have sticked to Linhof and got their 3D micro head
Yes, glueing to stop a well-known and popular user modification surely must be a work of evil
I've looked at the Linhof 3D micro, and it seems to be a nice product, but the D4 is better for me because it has a much wider range of movement, and can do even vertical shots without L bracket. Also, the 3D micro head has it's clamp integrated into the head so it can for sure not be replaced, but it looks better than Arca's. The D4 has also the feature that gears can be unlocked, which I like, both for making setup quicker and use it as a "poor man's wiberley head" with my lighter telephoto lenses when I use the head with my Canon system.
What I don't like about Arca's screw clamp is that it is two story (makes blind install more difficult, and with a wide base like on the Techno you don't really see the clamp when putting the camera there), narrow (also bad for blind installs), tiny knob which is not rubberized and perhaps most severe drawback: it's ugly
However, there is one good reason to keep the original clamp worth noting too: the panorama scale on the top is not complete on it's own (like on the 3D micro), but the "arrow" pointing out where on the scale you are (actually a small metal pin) is integrated in the clamp. So if you change the clamp -- no panorama scale.
(The bottom pano has no scale at all, panos have a compact design which make scale placement impossible, which one may consider to be a weakness of this head).