Just to follow up, we had no issues using our home-printed tickets on the TGV, and using our Diners (MasterCard branding) card with EMV Chip-and-PIN card at Lyon Part Dieu, retrieved our tickets to Chalon-sur-Saône on the TER without any difficulty at all. (However, we were not able to retrieve the Chalon-sur-Saône TER tickets from the machines at Charles de Gaulle - Roissy TGV station). And we saved a pile of money buy purchasing on tgv-europe with senior and advance purchase discounts.