I'm well into my mod to add a Trackpoint to an Ergodox.
The clearance between PCB and the case bottom is very small -- only about 3mm. Because of this, I don't even have clearance for the SMDs on the bottom of the PCB because the Trackpoint module bumps against them.
Because of this, I mounted the right hand SMDs on the top/plate/switch side of the PCB instead of the bottom side as indicated in the most Ergodox tutorials. I checked the polarity on the top and the bottom of the PCB with a multimeter and everything flows the right way. Additionally, I test fit some Gateron keyswitches and they (just barely) fit too.
So, is it really that simple? Or did I miss something that will mess up my build?