To be honest, with Scandinavian girls it's easier to pick up civvies. Go to a Scandinavian event, collect numbers. They are very liberal so a fuck buddy system is easy to set up. I used to go to a Scandinavian parties thing every now and then, collect numbers and be on my way. Text to meet, do your thing. Hassle free.
Finding an actual Scandi wg on adultwork will take more effort than that, and you'll fail several times along the way.
Scandinavian (Swedish Danish Norwegian) women will try to hide their nationality in this work, not promote it, for various reasons. As I speak several languages one would not expect, I have met WGs who claim one nationality, but heard them speak another and assuming there's no chance I speak it. I met a Swedish girl like that, though she claimed to be German or Estonian (I don't remember which).
There was a Danish au pair in North London with a smashing booty, but she quit
Scandinavian girls for fun times are also easier to meet in shag sites etc than adultwork. Culturally for them fuck buddies are fine and nothing to be ashamed of, whereas prostitution is considered a blight.