One porblem this has is that Bitcoin are not a currency.
If I were to sell bitcoin in my local market, for example, I would HAVE to add more than 20% to the price of the goods - MwST / VAT (european sales tax) like for any other good. I dont do that / have to do that for sales vdelivered out of europe, so MtGox and some other places are a goodlegal way to sell them without taking this hit (MtGox is a japanese company, the french company taking the money is just acting as agent, all sales are against the japanese entity).
This makes it hard to establish a local market legally.
It COULD work - needs a check - if one coult argue that Bitcon are not "in the country" but a certificate of ownership transfer. As long as the physical good (not existing) does not enter the EU no import / sales tax applies.
The same is with gold here.
Buy a gold bar: VAT has to be paid.
Buy a certificate for a gold bar in a swiss bank: no VAT
Cleaning up this legal hurdle is significant - also as a progressing means. I Would LOVE to put up some bitcoin exchange business. Heck, I would LOVE to put up a BItCoin symbol on every of the windows of my new bitcoin mining data center