It has always bothered me that the Spring’s remote key puts holes in my trouser pockets—much like sticking a fixed-blade knife into your pocket.
That is why I designed a key handle that accommodates only the blade and the transponder. The remote control then remains on the keychain, separate from the blade.

A pause is inserted at Layer 26 to allow you to insert the blade. At Layer 28, the transponder is inserted, and the remainder of the print is then completed.
Good luck with your build!