Nope.Never used one of those in EK either.Neither in my previous company on NGs.It sure would be a bad day if your over centre locks were to fail AND your hydraulics were to fail AND you got yourself the worst tug driver in the shift,who THEN decides to do a sudden stop!!! Which is exactly why they have been rendered redundant.Besides ofcourse the logistics involved in keeping a "spare" set in the tug.Which is exactly how the problem started to begin with!
Also some airlines have a legal requirment for the Captain to positively see and identify the three pins 'fore commencing taxy.Cheers anyays.