Perhaps not the answer you are after as I haven't tried CWC. I had good look for leather NATOs I have one from Steveo straps and it is lovely. It has stretched a little but I suspect that it comes with the territory as leather NATOs need to be thinner than a standard leather strap to stop the watch sitting too high. Hence they aren't quite so robust.
Alternatively there is the vintage watch straps website who also make leather NATOs. The proprietor seems to have put quite a bit of thought into the design which is refreshing.
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