I'm still making modifications to my build, but I'd like to report that the PCB-material plate worked wonderfully, feels plenty solid, and was a pleasure to work with.
Once I'm done, I'll update with a post about the finished build. I had a lot of fun with it.
EDIT: As written up for another site:
http://imgur.com/FiPYx4DThis board was built with the purpose of being dark and quiet, being visually and sonically unobtrusive while at the same time sacrificing little in terms of quality. In other words, the opposite of my Model F spherical project.
It is in AEK layout, with a PCB and PCB-material mounting plate from the ever-amazing Hasu. The switches are basically SKCM Orange, with a few key modifications. The sliders have been replaced with damped White sliders from a 1995 AEK II (hence Creamsicle), and a small piece of folded paper has been inserted behind the tactile leaf, in effect making the switches more quiet than even MX Browns with O-rings. The spacebar has been silenced by means of installing landing pads on the stabilizers, which previously produced a large degree of rattle and clack.
The Capslock and Right-Super keys are SKCL Locking switches (Grey and Cream, respectively), the Right-Super key kicking the board into a function layer, with WASD functioning as arrow keys, QE as PgUp and PgDn, < and > as previous track and next track, P as play/pause, and -+ as volume controls, along with Backspace as mute.
The main body of keys is a sort of dark copper color, created by not quite dyeing them long enough in iDye Poly black, but I've found that I kind of like the color.
The case is an aluminum case from a Pok3r, and the spacebar was nearly a disaster, as dipping an ABS spacebar in near-boiling dye is always scary, especially when you remember that 6.5u spacebars are hard to source.
This is my first 60% board, my first Alps board, and my first Otaku board. Frankly, I love it. Here's a typing sample, from before the keys were dyed, and with the original plastic case.