Many Hermes items have interesting stories behind the design (especially homewares), perhaps use that as an intro? Choose something interesting and ask about the design philosophy or history. You can even research before and say "I heard that this was designed because...., is that true?" (This will also help if the SA is new and does not know which is common at NBS!) For instance, Pierre Hardy's use of black spinels and rose gold in jewelry to pay homage to black box leather and Barenia. You can find all kinds of fun tidbits on the H website as well as here