All through Scandinavia slaying another in battle was a sign of strength and courage. It was also believed that if you died in a war or fight, you were granted a seat in Valhalla, at the same table as Oden, which was the greatest honor. If someone was killed in battle by another, their killer had "given" them the highest honor of all. So in most cases, no, as both their religion and social customs tolerated it and even encouraged it. Killing kin or allies was considered atrocious, though, which is why Erik Den Röde was both feared and hated throughout Scandinavia.
But yeah, guest has been sucking his own dick.