Shapsug Adyghe (Northwest Caucasian) displays a morpheme that signals direction
towards deictic center, which additionally indicates inverse contexts as well as
violations of an ultrastrong reverse Person-Case Constraint (PCC). In the absence of a canonical PCC pattern, Adyghe challenges the standard-inverse generalization, recently put forth by Stegovec (2017, 2020). We show how the phenomenon is problematic for a variety of approaches to PCC effects that rely on salience hierarchies or the notion of a syntactic intervener, concluding that multivaluation accounts along the lines of Béjar and Rezac (2009), Deal (2020) predict the patterns without further ado. In analyzing the directional marker as an abstract person licenser, we provide new evidence for the Person Licensing Condition as well as the syntactic projection of implicit arguments (Landau 2010, Legate 2014). The data come from elicitation with 3 native speakers of Shapsug Adyghe and an online survey.