What’s TrikX?
Anyway, as a way of solving your problem, I suggest just sending the blue Alps switches to me. Then you won’t need to worry about them.
More seriously, what kind of goals do you have for your project? Do you have any particular layout / keycaps / materials in mind?
If you’re looking for a somewhat conventional layout, the easiest thing to do for if you want to just make one single board is scavenge a plate from an existing keyboard (optionally cutting it down to the size you want), and then hand-wire a matrix on the back, and use a Teensy 2.0 for the controller. Then you don’t need to worry about designing a PCB. You can then design a case (layered laser-cut acrylic, CNC'd wood/acrylic/metal, 3d-print, whatever) to fit whatever shape you have.
Alternately, if you have a more unusual design in mind, you could try to get some water jet shop to cut you a custom steel plate. For Alps switches the plate needs 12.8 x 15.5 mm rectangular holes.