I couldn’t get it to work properly on a network share when I tried this recently.
I first thought indexing a network folder was not supported as I read in the DT manual that only local and attached drives are supposed to be indexed. As I later understood network folders can be indexed, but that might be troublesome if there is network latency. As I tested with a WiFi connection to approach the share that probably explained my experience.
I haven’t yet tried it with a cabled connection, but certainly will as a smart rule solution reduces the dependency on other software (folder action scripts or other).