CA Screamin at DLR has over the shoulder restraints.
Maliboomer at DLR does too, but they also have a strap that goes from the bottom of the restraint to the seat. (that strap is what has prevented DH from riding it).
However, what concerns me about FJ is how low that restraint goes, and if hubby's tree trunk thighs will fit under it...his legs don't change no matter what his weight is, because they are solid muscle no matter what, so even if he loses enough belly and back he still might not fit.
But I too would sure love to know how Maliboomer's fit compares to FJ! Thanks for making the thread, OP!
Oh, and there are shoulder restraints on Rock and Roller Coaster at WDW.