This sounds awesome, where can I purchase this officially. But I am afraid, in case of any transactions made through online fails, how will be the pay back methods. It needs complete security and reliability for the consumers and traders, if they fulfill such confidential things, then it is a real good deal.
If the transactions fails and you don't get recredited, you can sue your provider really good. Don't worry about that, but I don't understand the use of such cards right now, in 2015. It might be much more useful in the coming years when the transaction feels won't be as high as it is at the moment, when the bitcoin will hold more adoption and more value.