Ed - At this point, I've only taken a 4" x 4" square and dry fit it on my layout. Nothing glued down as of yet. I will say, that it seems to lay down well and fit contours nicely. I'm curious to try out my make-shift static grass applicator on it to see if it pulls the polyfiber strands upward to replicate grass. As my layout proceeds, I'll be sure to post updates and photos of the experiment.
Dave