No offense here
Patina is inevitable and will eventually happen. The only way I understand vachetta will patina extremely slow is when the bag is in its dust bag and never used. Patina occurs when you hold the vachetta so each time you use the bag or expose it to any light patina will occur. In store they keep their pieces in dust bags inside a drawer (that I've seen). I understand how you feel about trying to keep those handles looking like the day you bought them, but think about how much money you put into that Montaigne and why you bought it. It should look pretty in your arm instead of in a dust bag hidden away
I switch my bags out often so that also slows down the patina on mine. GL!
