Nope, Jamba does not forward RealID. RealID is contained in a different set of functions than normal WoW chat. As the addon author, I am not going be implementing any RealID functions as this would require me to use RealID, which I will not do*.

However, if someone else wants to write a RealID forwarding module for Jamba, I'll happily include it in the Jamba distribution (or they can distribute it themselves).

*At this point in time and for the foreseeable future (but maybe not forever).
*Also requires me having RL friends in WoW, but unfortunately they all have quit playing WoW and I'm the last man standing!