One of my major criticisms of Trezor has not been valid since <I'm not sure when>!
At some point, SatoshiLabs released the EagleCAD files for the Trezor, available here: https://github.com/trezor/trezor-hw/tree/master/electronics
Well done, SatoshiLabs! You use the 'open source hardware' label without shame.
I have not yet looked at the posted CAD files in detail, but at first glance they appear to be correct and complete.
I wonder when the exact clones are going to hit the market? Or have they already? Is the Trezor in your pocket genuine?