I think this is huge step indeed, but I would be cautious because well all know that banks don't like bitcoin because of its de-centralized features that is why you can buy directly but to use an exchange. But why used banks anyway when you can just buy it thru local coins or exchanges like coinbase that they have pointed at? Well, I think we should monitor and how see things work out with this setup in Norway.
This is really a great news! I think legalizing and using bitcoin in banking system is the greatest way to create an idea that bitcoin really is secured and has a lot of benefits. Bitcoin is the most convenient way of saving and earning money at the same time. I hope there are more countries out there who will follow this step.