Certainly applies to RLC. Search the RLC forum for discussion on this. It was decided by a meeting of the Corps dress committee a few weeks back and will be reflected in the updated corps instructions.
the roumours i heard was the drlc was ex RAOC and he dont like it also he cant ware his leathermans on his stable belt.... but to tbh who is going to tell of a brig..... the only thing that has annoyed me is i have just went out and bought a new one 3 weeks prior because my sgt maj decided it looked crap.
Plus the stable belt stoped us looking like we as waring a big pair of pajamas 2 work but oo well