Though the article does mention bitcoin, I wonder if bitcoin is really among the virtual currencies these banking folks have in mind in their planning. I haven't seen any evidence to suggest it is, and I still think bitcoin is too small for them to really care about. The "bitcoin" mention looks more like the author tossing out what he thinks is an example.
I wonder too. Investors and banks are looking where the masses of eyeballs are. They'll be gearing up to deal with the 'virtual currencies' of things like facebook, WoW etc - but I think something P2P and not driven/owned by a single corporation is still going to be a bit of a surprise for them in that it requires a heck of a lot more understanding than just striking a deal with a few major stakeholders and linking up a database or two. They may have heard of Bitcoin - but I'm not convinced they understand the difference... or perhaps they do, and it's not just too small, but all too hard in comparison.