Good question.
I don’t think it’s a matter of if RM will work over network, because it does, but rather an issue of trust as in do you trust a feature that does not have a proven track record as compared to sticking with what is known to work since forever. The sequencer demo for example will play, including the InfiltratorDemo, with 2 clients running which does prove that attack,s dodge, or even movement will trigger over a network as an event so to make a player move one would have to replicate the event that causes the player to move…like pressing the W key.
The unknown though is what would happen after release and under practical playing conditions?
By the way if I’m reading the documentation rig a montage is no longer needed since 4.16 but lack of documentation is also the issue.