Hi All,
I've included a pre-release of the attributes map brush for the Sapphire 3D editor in the latest beta-release of L3DT (v2.5c beta 1 build 2, 12th of March '08). You can read all about in the development weblog here [many pics included]. Here are a few teaser images, showing the making of a road using Sapphire's bulldozer heightfield brush and attributes map brush:
Please give it a try and let me know what you think.
Cheerio,
Aaron.