Features:
1)It can be used for high-res close-up renders as well as animation.
2)It's very much render friendly.
3)A 10X10 mtrs grass patch with close to 12000 render instances rendered in about 8 minutes at 1280 by 960 resolution.
4)It can be painted using standard painting scripts like Advanced Painter or Proxy Painter. (These scripts are not a part of the package but they are available online for free)
5)The grass can also be used along with Ground Wiz for large area scatter.

Sample shots included on turbosquid has original time-stamps mentioning the render times. It's actually a small patch of grass which can be easily scattered over a surface using standard scatter tools.