When he’s in Seattle, he’s usually working with his own Whim W’him ensemble, but Olivier Wevers has been just as busy out of town, 3 making dances for other companies in Michigan, Pennsylvania, and Texas. And one of these works, his very witty The Sofa, which combines a changing roster of partners dancing all around the titular couch, circled back here to Whim W’him for Seattle audiences last January.