Viewmode unlit in packaged build

Is it possible to get the viewmode unlit command to work in a packaged build? Or equivalent command list which will get the same effect?

It works in the editor and in the packaged build in the normal mode, but if you run a listen server the command seems to be disabled.

I know a similar effect could be achieved using post processing but I would like to use the command to improve FPS as a graphics option.

Any help appreciated

I need to know about this one too =(