I think so. I'm talking about the MIDI output port drop down. Works like all the other quick grouping here.
I've just tried it on my laptop that doesn't have any MIDI devices attached so I inserted a couple of drum maps and used them as virtual ports.
I know it works on my main DAW as I was swapping all my drum tracks this morning between a couple of hardware units and session drummer while experimenting with sounds.
Worked in X1 for me as well but as I mentioned earlier there was a bug that stopped it working form the inspector but that was fixed in X1 at C or D.