Shower sandals, smoking loafers and strappy heels coexist on Christopher Kane’s spring ’15 runway. The latter was the stronger of his footwear propositions. At times, the variety came off as indecisive. It would serve the designer well to build a stronger footwear business for his Kering-owned brand, what with the access he now has to an established stable of luxury experts. He isn’t short on creative shoe notions.