Almost any other store with multiple locations will track down the item you want in another store, have it shipped directly to you, and accept your payment on their premises. Is it really not that way at Hermes?
Say you know about a great chocolate brown birkin in the Madison Avenue store. Can't your regular SA in Houston or Honolulu just call them up and say, "hello! please ship that bag to my customer - I am ringing up her payment now."?
If not, that seems like a positively antiquated system.