Travel Cash Cards, How do you choose?
I don't know about that - what kind of currency exchange rate can you expect when you use that card, and what kinds of fees does it cost you just to have that card - how does that work? And why would you want it?
In Australia there is an ATM everywhere you look, and by withdrawing Aussie dollars from ATMs you get the best possible exchange rate. If your debit card draws on an account back home with a financial institution that doesn't charge you fees for the use of AtMs, then you're better off than with any other modality of getting cash. Schwab is one of those - if the foreign bank charges a per-transaction-fee, Schwab even refunds that to you!
But even if your bank charges a few bucks each time you use an ATM, as long as you can take out a decent amount now and then (not piddly amounts daily), those fees won't add up to much. Just tell your bank where and when you're going so that they won't block your ATM use as "suspicious foreign transaction", and tell them to increase the daily withdrawal limit in case you need a lot of cash in a hurry for a dire emergency (cash still speaks louder than anything else).
So look into the terms and conditions of that "travel cash card" - what are the fees to establish it, how much do they charge per transaction, how much do they charge for you to top it up, what's the cancellation policy, etc.
If you have a checking account with a debit card, and credit cards for bigger items, I don't see why you'd want to use some other instrument.