[lxgr]

RCS is a joke of an instant messaging solution, so I highly doubt it.

Why on earth would I rely on any messaging infrastructure provided by cell operators or alternatively Google?

Why would I tie all my messaging to a single device and the requirement of having a particular SIM card in it on top of that?

Absolutely nobody other than Google still believes in RCS, and I think doing the opposite of whatever Google does in trying to "solve instant messaging" is a good heuristic, given their track record.