i understand this watch is ordered directly from either patek , geneva or patek, boutique. one person was delivered such model directly from distributor bypassing AD, recently.
but i must remind you, that this is a quite a small size case, for the watch collectors who like the larger case watches, certainly this will not be on their wish list.
i too had the chance to play with this model earlier this year, very smooth chronograph movement, its mechanism probably smoother than 5004. the enamel dial also very nice to look at.
happy hunting !