Has anyone tried this at all?

If it's at all within my sight of being what it is, this could possibly be the answer to one of my city-making prayers aside from making decent-looking cliffs. With my Roquan city (search YouTube for "Roquan") I've needed custom trees and not the usual static Oblivion ones. This could also help for my big project after Roquan: Dynagor, the city of totem poles, monsterous redwoods, and the fresh smell of rain.

I'd like to get some opinions from some people who have experienced SpeedTree and lemme know if it's worth getting.