To update, Texas Roadhouse did use Quick Chip after all per cardpeek.
I also used my Diners Club MC at PetSmart and Shell and both continue to not use QC (with the former being the only one to ask for PIN). Who knows how long that'll last, though. I need to go back to WinCo Foods at some point as well with a transaction log supporting debit card since the UI on the terminal changed since I was last there (quite a while ago), but I suspect they aren't using QC based on the terminal behavior.