AcidLotus:
In a sense, yes. The rule would look something like:
IF Light OFF and Dash JOINED, Light ON
Then a second one that has:
IF Light ON and Dash JOINED, Light OFF
A limitation is that you need to wait after pressing the button before you press it again. Because it has to disconnect from the network. So it is not a perfect solution or as smooth as an actual switch, but it will do the job.