Ubi's pictured in this thread is a Concepta modded one...beautiful.
Yeah...as said above, the running second hand dial in the 6-o-clock positions (aka running seconds at 6) has a modification done to the A7750 movement to move the running secs from 9 to 6-o-clock that involves adding around 13 gears with no jewelling which is like adding gears without bearings. This means all the extra work the movement has to do to power the extra gears results in decreased lifespan.
The one you have pictured in watcheden is the problematic movement. This applies to the Daytona models with the 6-o-clock seconds as well.
The cheaper alternative is to order one of these, and have Avitt do a DLC treatment on the mod plate. The DLC reduces friction...not sure of the cost...is not as good as a jewelled movement...but better. Some have said a graphite treatment on the movement has brought new life to theirs...others have said it doesn't last long.
The gen is only mechanical...hopefully this helps...sorry for the bad news...I want one of these too...but have stayed away because of this problem.