After looking through someone's Exile II Let's Play, the closest description I found to support my assumption called them "many-jointed", so its fairly ambiguous. In any case, I'll focus on making them more similar to the extant Vahnatai graphics.
Ok, so caster version 2:
and for fun, the full size image which I then scale down and tweak:
As for the warrior, I was going for a fencer sort of pose, but he ended up just looking rather awkward. More edits for him are forthcoming.
EDIT:
I also found the Crystal Walls graphics I made as a kid (edited from the blue bubbly unicorn walls from ZKR). Posting that as well.