It recently came to our attention that our Standard Royalty Free license restricted the use of shaders, materials, and textures in logos, trademarks, and watermarks. This was quite a problem as shaders are a key building block in a lot of 3D work. After reviewing the license and consulting with our legal team we've added an exception to the Standard Royalty Free license that exempts shaders, materials, and texture products from the logo, trademark, and watermark restriction. This should make the license much more friendly to all of our shader authors!
The updated license can be found here.