Those aren't coins they would use. It would only be something similar to the tech behind XRP as it is a closed contained blockchain. There's no mining and is designed for settlements. They can easily create their own blockchain which mimics Ripple. Hell, Ripple even said they could create your own coin for you to use within your own network of friends. But the value would only be internal. Same as if banks had their own blockchain created. We don't know.
The blockchain would have to be within an internal system where you have a network of computers online all verifying the transaction. In Bitcoin and others, you have people and machines mining and can verify when a transaction is sent thru the system to verify if this long hashtag and transaction is real, then it's sent around and all verified to be valid across thousands of computers/servers all at the same time. Same happens with XRP. But there has to be a network in place. Ripple has that. A company like SWIFT would have to sell banks on installing a networked system to do it's checks and balances of every blockchain transaction for whatever they are using.
They are climbing a hill that Ripple already has in place. This is my two cents, but here's an article that shows the similarities and differences:
===============================================
https://www.quora.com/How-is-Ripple-different-from-bitcoin
How is Ripple different from bitcoin?
SIMILARITIES
- Both Bitcoin and Ripple are decentralized.
- Both are open-source protocols and not owned by anyone. (NOTE: The Ripple code has not been released yet.)
- Both use algorithms to ensure that their networks come to the same conclusions--so if one person authorizes Transaction A, the entire network comes to agreement that Transaction A happened.
- Both eliminate many monetary trust-requirements: trust in central banks, in financial services companies, in legal systems, contracts, etc.
- HOWEVER both still require trust-based relationships to "cash out." To redeem Bitcoin/XRP for USD you need a "gateway" company to help. Someday people might not care about having access to USD, but for now it's an entry point for external regulation.
- Both allow for anonymous, free, p2p transactions across the internet.
DIFFERENCES
- Bitcoin and Ripple use a different method to reach network consensus. Bitcoin uses Proof-of-Work (mining). Ripple uses an iterative consensus process.
- As a result, Ripple is faster than Bitcoin. It only takes a few seconds to finalize transactions. It's also more energy efficient.
- Bitcoin is a decentralized digital currency. Ripple is a decentralized transaction network that also contains a digital currency called ripples or XRP.
- The Bitcoin network tracks the movement of Bitcoins. The Ripple network can track information of any kind.
- As a result, Ripple can track account balances of any existing currency.
- Bitcoin requires centralized exchanges (Mt. Gox). The Ripple network acts as a decentralized currency exchange. So if someone wants to sell their XRP for USD they can do that within the network without needing a third party. (This will help Bitcoiners too: they can trade Bitcoin on the Ripple network without fear of an exchange going down and disrupting the market.)
- There is a set, gradually increasing number of Bitcoins (gradually moving towards 21 million). There is a fixed, finite number of XRP (100 billion).
- Bitcoins are awarded through mining. OpenCoin (the company that developed Ripple) will give away 75% of XRP though it has not yet given full details on how. It aims to distribute them as widely, fairly, and diversely as possible. (Yes. They are holding some XRP in order to make a profit just as early Bitcoin developers made a profit off acces to cheap BTC. They are idealistic people, but still working for money.)
- Ripple allows for automated scripts. This is a big one. For example, a script might say: if account A does not receive $100 by November 1, then the money it received will be automatically returned to the original accounts. Voila! You have created Kickstarter, but without needing a .COM to oversee things.
- Subjective, but I'd argue that Ripple "plays well with others" better than Bitcoin. Bitcoin has create a global cryptocurrency, a "digital gold" (which is great). Ripple can help businesses and individuals who don't think about gold or cryptocurrency (E.g. say a non-profit starts using Ripple as a way to facilitate cheap remittance payments to India--cool, people just saved billions of dollars in fees. Now, say a US Payment Service Provider starts using Ripple to facilitate micro-payments--nice, you can "tip" a website $0.01. Now, as a bonus, everyone who signs up for the Micro-Payment PSP can also send money to India. And these users do not even need to know about Ripple or be interested in decentralized currencies. They just know that payments got easier and cheaper. As this network grows, its features and advantages will also grow, and the competative pressure on "walled garden" financial systems could result in significant changes.)