I have just read that the new cal. 9F85 allows the hour hand to be adjusted without stopping the second hand.
If this means that a non-GMT quartz GS now has an IAHH (and as long as the second hand still hacks in some way) then I may just pick up another Grand Seiko.
Still wouldn't mind solar power and a perpetual calendar, but it's baby steps, I guess. I have always preferred the GS's rate trimmer over those other, Citizen features, anyway.