I like them, especially for an application with lots of activations per day, where a normal relay lasts only a few months. Your use is considerably more benign. When the controller for my sprinkler system pump died back in the 90's, I replaced the switch with a surplus Grayhill mini-hockey puck. 10 A relay switching a 6 A motor, around 200-300 activations per year, still running. I think the low activation energy fits well with your control signal, and it needs no protection diode or current limiter resistor or anything else.
ak