ING is surely not one of our big four, but t if you play their 'game' they have no forex or offshore fees, ATM rebates on the debit card, and a similarly endowed ING credit card if it is linked to an ING transaction account. After a 'test drive' in Germany and the UK the xrates applied are not bad (for Australia), either.
It removes the magic, the fees, and the complexities of travel cards as I see it. Pity ING appears alone in providing such an account benefit. I just use my ING debit card to withdraw local currency at an ATM and am good to go, or use it as a card.