Like to see evidence of this. My original AN-J-3a has the typical one-ply knits on cuffs and waist.Also quite possibly one of the M-422A contracts did also.
According to JC on the GW site, the Bogen & Tannenbaum AN-6552 had a fold-over, double-weight waist band. But it may have been the only manufacturer using it.Yeah, all the M-422As and 'early' G-1s Ive seen (at least in original condition, ie not revamped) had the single ply knit.