Edouard Rochet and his father were bicycle manufacturers before entering motorcar production. When being consecrated, bishops were to wear a black chimere over a white rochet. Over his cassock the Pope will wear a lace rochet. Rochet and Tirole analysed the implications of 2-sided markets for competition policy. The wrist-bands of the bishop's rochet typically match the colour of the chimere. James, the bishop is depicted in his rochet, red gurnard and gown. In choir they wear in summer the rochet with a black almuce. For more solemn occasions, they wear the rochet under a violet mozzetta. When Rochet fell ill, in 1970, he was promoted junior General Secretary.