My old company deactivated the PVD on the 744 for the simple reason they were never needed. Tragically the one time they might have saved the day in Taiwan, the crew failed to recognize the off-set indication.
We were CAT3b on the 744 and the R/W centre lights were more than adequate. The recency requirements in the Sim and the fact it was never really needed, killed it off. Maybe Boeing agrees. I found it very useful for an engine failure in low vis but that is all. Sometimes the men in white coats can have too many gadgets. (my new car suffers from Geek Overload and is driving me nuts).