Seatbelts maybe, but the bars work fine on Shock Wave, Mind Bender, sooperdooperLooper, Montezooma's and Scorpion.
Yeah unfortunately it's Six Flags policy now that any inverting coaster without OTSRs must have a seat belt, thats why they were added to YOLO, and apparently they consider the MCBR tilt on Goliath close enough to an inversion. I'd GLADLY trade those awful OTSRs for any seat belts they want to put in.
DDD @ SFOG doesn't have seat belts to my knowledge.