I commissioned HGW to produce these in a trial design but after three attempts they are still not pronounced enough to give the effect I wanted.
The stitching decals they produce already are simplistic and over-scale, I put the project to them as they seemed to have the process for what I wanted.
As they are they give at least some impression of detail rather than the alternative, nothing, on the Roden (and other) kits - but not perfect. At 1/32 scale I firmly believe something should be present, in real life the effect can be quite pronounced.
HGW have now tired of my pestering (not answering my emails!) - and a "rival" Eastern European company has recently announced their intention to produce WW1 stitching decals - the downside of announcing your intentions too early...so expect a rip off product soon - who knows how the complicated machinations of Eastern European model manufacturers works?..
I'll create a page on the site to illustrate the idea and the product as it stands. A limited number of test sheets can be made available if interested parties email me email@example.com
best wishes, Richard