The default shipment method (weight_countries) doesn't have the option to set a currency for it, it uses the currency of the shop.
This is a really big problem for some of us (see http://forum.virtuemart.net/index.php?topic=114351 (http://forum.virtuemart.net/index.php?topic=114351)).
Can we hope that there will be a new field for currency as in VM 1?
As far as I know this applies to all versions of VM 2.