I received mine today. Here are my observations so far:
It feels very nicely built. Glossy white with chrome around the edge. The mat itself has a rubbery texture. It doesn't slide at all.
It works with the phone in any orientation. Which is nice because the power jack is on the bottom
It seems to be charging rather quickly. From 50% to 65% in 30 minutes.
My phone is staying cool so far. 30 degrees C
It doesn't make any noise at all.
This is all with the OEM bumper on.
I'll update once my phone chargers completely.
Update: Fully charged from 50%-100% in 1:45.
I never saw the temp go above 33C.
This thing works great. I've decided I'm going to hang on to this one for my office.
I would recommend buying this.