This is a Remix by Jimbo, has been modified for the newer version of the switch. Also shortened the bottom and placed a hole in to hang it off a keychain or a lanyard. 

TPU

Printed it using eSun TPU 95a and made it 0.8% larger to accommodate for shrinkage on flexible filaments. Squeezed snug into the case without any issues.

PLA

Printed the case in PLA but split the case above the hole line to fit the switch in and then glue the parts together. No issues there other than you will see it is in two parts.

Have not tried printing it as a single object. Please let me know if you have tried and it fits.

Potential Future Mods

Thinking of modifying the design to create a box and lid design.