Gurdian company( I belive it is true)
-->I agree! I have never seen anything like that before. It looks really clever.
It looks really secure, but can't you easily drill out the screw holding the rotor?
Don't say any details if if can be drilled, that will lead to the thread locked :S , just say you think yes or you think no

I mottura makes them dependent on each other. Not sure which way is better though...
The Guardian way is more flexible, but I think the mottura way is more secure.
Anyway that rotor thing is really clever.
I like mottura locks I think they offer very good security and very good quality too. But they are very expensive here.
Well they also have a lot more material in them than a simple cylinder...
Heavy lever locks are very popular because there are so many armored doors in flats and houses.
Are there many robberies?