Holding up fine even after dropping it. Definitely works. And I decided to print the model I found with modular bits so I could reprint and replace the broken feathers when that eventually happens, instead of reprinted entire body.

This looks very similar to the traditional (eg purchased at a retailer) one I own with one exception: this looks like it screws into a continuous piece of plastic in the table saws track. Mine has two pieces of plastic - one per side. I've always assumed it was designed that way so the things it screwed into could rotate ever so slightly and bind in the track when you tighten it down