I remember these - went on Nitro opening year. Didn't create issue at all and worked super fine. Wonder if B&M will need to reimplement if it indeed is a manufacturer issue vs. staff/user error?
They seem super unobtrusive compared to a regular seatbelt given that they attach to the restraint instead of going around the rider's body, and I would assume the belts lock in length in a way that keeps the primary restraint in place, instead of traditional seatbelts which don't do much if the main restraint unlocks. I heard they were removed to speed up loading, but if we have to see redundant/failsafe restraints return, it looks like a good option to me