Hey, this one gives me an excuse to start
two new characters! And an excuse to use that Glass golem that I recently unlocked.

v1e add support for the Mecharachnid Rider and Golem Rider class evolutions from mannendake's
Rider Evolutions addon. (Oh, and to answer your question, mannendake, in the theme of this evolution, I imagine a Writhing One might "wear" their WtW like a sort of full-body powered armor.)
[And while we're here, we paper over what looks like a bug in Mecharachnid Rider; in particular, the evolution's requirements include raw talent level 5 in the Mecharachnid Rider talent, which does not correspond to the evolution nor match any talent I can find in Embers. I'm guessing the intent was raw talent level 5 in Mecharachnid Piloting, which we implement. So you won't be able to take the evolution until level 26, but…

]