I actually think the black and tan lace Glovesmith uses is from Tanners (I asked Bart one time and I think that is what he told me), but the other colors they get from overseas. I have worked with or had gloves from them made with tan, black, gray, red and tobacco. All of it measures true to size (the 3/16" was 3/16" and the 1/4" was 1/4") and have been pretty even. The gray, red, black are all similar in thickness and stiffness (not too stiff). The tan and tobacco are stiffer and the tobacco color is a bit thinner.
I was recently relacing a Rawlings HOH with a modified trap. The original finger lace measured 7/32" and the palm lace was 5/32". While 1/32" wouldn't seem to matter much, the wider Glovesmith lace made lacing the modified trap a challenge. Here is what it looked like.