I'm still waiting for scibor to make that "super" sculpt. perhaps you should try other clays "stuff" :)
Greenstuff is really hard to work with if you want sharp edges, takes me 50-70min ussualy to get the edges good, and even then they are not perfect :/
But this inspired me to convert my wardancers, I'l put wooden plates on them so that it will look something like the tau armor but in wood :)
Fantastic work!!! Congrats...
@Romain: Hm... Maybe 220$ is too much, I have no idea, for I live in country where 220$ is much more than in some western countries... But these look great, and it is certain that it is not possible to do this in 10 minutes...