I shouldn't be stunned Nigel, - it's a discussion forum for all opinions! Against your argument is that while I can't see the detail in photo too well to compare, neither can anyone else sufficient to be definitive either! And that manufacturers label definately something that comes fixed to what we used to call C&T or Clothing and Textiles. A bog standard paiur of denims or a BattleDress jacket shows the detail that forms part of the contracvt label. And if the old and well liked camouflaged wartime SMOCKS, windproof were still available for the sniper wing in the 60's for outdoor training, how come we never saw these string vest type things - or ever heard of 'em. If these were an issue or available item, how come the quartermasters weren't instructed to obtain them as supplementary issues, authorised along with the authority that came along with the issue of the CES.

So far, and I know it's early days, but that's the only one known to exist

Yet to be convinced though