Is it possible to render dramatic cloudscapes using Blender’s smoke ?
Examples:
Probably better bet trying to use the cloud generator
Sure it’s possible, but if you’re using cycles I don’t think the cloud generator will work (cycles doesn’t have point density texture support yet)
Someone did a tutorial on how to use cloud generator and then rather than point density they generated smoke from the particles and rendered in cycles…
Can’t remember who and don’t have a link but google is your friend!
If Cycles doesn’t work, then BI is what I can use 
http://www.allcgtutorials.com/2014/blender-tutorial-realistic-volumetric-clouds-with-smoke-simulator/ Is this the one ?
It’s possible. The clouds in this are all Blender: http://www.blenderartists.org/forum/showthread.php?313335
Judging by the making-of video, he had painted background and only few clouds were made with smoke.
That’s it, some great results in that video!