Yeah, I've seen a few, but it's a good thing he keeps a part of the process of his work here.
In the world of ripoffs, archiving your works and keeping essentially a "catalog" of it spares any doubts who made the dang thing in the first place. Keep notes, build ref sheets, date if possible and realize that if StarSlayer is good enough to be ripoffed, he's got some aesthetic chops.
Some of StarSlayers work has started to influence my own designs and it's quite to my chagrin that I had scribbled somewhere in my sketchbook "StarSlayer has killed yet another idea!"