Wow, he's used a very bold choice of colours. They look nothing like your usual run-of-the-mill orcs [with possible exception of the green chap at the bottom].
I like his style and he definitely should get painting and posting more stuff here!
This is the first I've seen of the WW Orcs and looking at how your mate has done his, I can see me getting some for use in my SF/VSF games as well as the more usual fantasy games. They would make great low-tech aliens in 5150 etc.
I'm well impressed