Yes - I have specified 1.6mm standard PCB for these. The reason is that going to 2.0mm PCB adds about $20 each to the cost of each PCB, this was not the case a couple of years ago. Initially I decided to order 1.6mm while prototyping only but I found it was actually stiff enough, supported by the full-length claw at the bottom of the case top.
Unfortunately it is not possible to switch the KS-33 low-profile switches into the old PCB, as the footprint is different. Also it is essential to use a printed plate with these switches as they do not have the extra mounting pins (3-pin rather than 5-pin style) to locate them exactly.
The v2 keyboard is a little neater in appearance, and has the keycaps at a much better (lower) height with respect to the top of the case - it looks the height an Amiga keyboard should be, v1 is a little taller. It has the multi-color power led that provides caps lock function, and you don't need the separate LED circuit board. I personally prefer the low-profile banana switches to anything else on the market at this point. But there is nothing wrong with the first version of the keyboard, some people will prefer the full-height MX switches and they should stick with v1. They use the same keycaps so you could have both and switch between if you want.
Also my 3D printer is running non-stop so that as soon as the other parts are delivered I'll be able to build.
