I have not but heres a test. 2 plants (date palm, and old eucalyptis...23,000,000,000 polys). Its really tough to break a shot like this up into peices.

Im using a fractal map from terragen........(from chips Terrapak)......(its all one big land mass)

Im trying to do an evlauation of V6 for professional matte painting purposes.....(im really trying to take it out for a test ride)

The full render for a 4K with ultra/renderosity settings is 23 hours lol.....

also I want to put stuff in the valley...so Im trying to get all atmosphere...haze and shadow all included

By the way love your work Chris