Time displaced norsemen aren't nearly as uncommon a subject in the genre as you might think. After all, they adapted Outlander for television, and that book is older than I am! I don't believe there's really any significant difference between Scotland and Scandanavia, so it's essentially the same.

Of course, it doesn't even need to be a fictional construct here. We've probably had viking imPorts already.

[ Loki counts? Probably. ]