In robotlegs book "Actionscript Developers Guide to Robotlegs" they are not using it that way:
_remoteService.addEventListener(TwitterEvent.OVER_CAPACITY, dispatchOverCapacity);
But if you want it and it helps you, you can have it, why not. I use signals, but when I name signals, I name them the same as the command is named with different suffix:
ConfigureViewSignal
ConfigureViewCommand
Also, did you check out AS3 Signals and SignalCommandMap for robotlegs? https://github.com/robertpenner/as3-signals https://github.com/robertpenner/robotlegs-extensions-SignalCommandMap