Print in the orientation of the STL files with support. The support contact face is nearly non-functional and you will not touch it, therefore even some roughness at that surface doesn't matter.
Be aware: OLED version is 3mm wider than NORMAL version (for V1/V2 model).
It is a tight fit, but does not take too much force for the Switch to be put in. If it is too tight on your printer, try enlarging it by 0,2 to 0,3%
Fits on a Prusa MK3 print bed, if turned at an angle (see pictures).
The author marked this model as their own original creation.