Probably not worth it. I have a box of them, besides the terribad poses the heads have a collar on the back of the neck that makes it hard to swap heads.
Here's my aborted attempt at turning them into arbites, you can see the scoring on the body from trying to cut the head off. Fortunately I was using Brettonian heads with a big gorget but more normal heads would look terrible.
Compare with what I could do with normal cadians and I think it's worth it.