I installed the metal plates for mine and have been using the grifiti wrist rests with no problem. Or rather, I haven't noticed the overhang in actual use.
But this also means I haven't seen the QC issues with the acrylic plates folks are describing.
Edit: I did notice that, while I have my Ergox tented, it tends to "rock" back and forth along that curve of the full hand attachment. I think I'll use the rubber feet to prop that up so it stops rocking. that's the most annoying part.