On June 18th, less than 2 wks ago, I bought a Birkin (lucky random walk in!!) from the Hermes store on the Italian island of Capri and paid with 2 credit cards, one of which ( on which I placed the far larger amount) doesn't charge an overseas fee (I'm from the UK).I'm the same. Pay off the balance in full with each statement. You're so right! Never get a call about Hermes transactions from my bank either.
There were absolutely no issues with this and the staff seemed used to the "2 credit cards" payment method! [emoji4]