We travelled from Basel SBB to Paris Lyon on the 10.34 departure last week (it was a through working from Zurich).
Having consulted the "wagenstandenzeiger" board on the platform at Basel to be in the right place when the train ran in, we then found the TGV arrived in reverse formation, and everyone had to dash about to the opposite end. However, it had arrived at the station ten minutes before its departure time, so no delay resulted.
I hadn't expected a double-deck TGV, so that was a nice surprise: we were on the top deck in second class. There was nothing on the DB UK-issued ticket to indicate a double decker; SNCF-issued tickets tend to show "en haute" or "en bas" in my experience.
The automated display in the coach was interesting; as well as showing the usual next stop, train number etc. it also showed our speed once we got on the brand new Rhine - Rhone high speed line. We hit 320 kph briefly a couple of times, but there was no sustained travelling at exactly that speed. Nonetheless, we were bang on time into Paris which gave us a relaxed hour to get across to Gare du Nord for Eurostar check-in.