My other barenia items are mixed in terms of hardware - but somehow I seem to have a karma for brushed hardware, this would be the 3rd, so shiny would have been a nice change

… But, in general I am not so much focused on HW, as long as it fits the bag itself. And with fauve barenia, GHW, PHW and BPHW all look amazing.
Your HAC - This sounds indeed a bit worrisome- all my barenia stuff gets rained on quite frequently and sometimes heavily, too, and there was never an issue with drying completely off… I do very much cross my fingers for you and feel with you

! But, again, Hermes spa sometimes sees things on my bags that I never noticed, not sure if they use a lense on the bag. So, maybe, this is something that you would not have spotted bare-eyed?
Which colour is it?