I have found the standard Linear Tech and Yahoo-LTS-Group Spice models for switches somewhat inconvenient to use, so built some myself. In case others find them useful, here's some for DPDT and SPDT switches of the break-before-make and make-before-break type. A voltage in the range 0V-1V, applied to a control input, controls their state.
The zip file contains a model library, .asy files and a .asc test jig.

 

hi alec,
I very handy addition to the LTS models, a big improvement over the existing switch models.
Eric

 

Hope so .