The Immersive version has three parametric EQ bands instead of fixed frequency high- and lowpass filters, allows for reduction of Crossfeed (for more metallic/ less dense trails, roughly speaking), and adds a very nice looping feature. All of this makes it a worthy addition even for stereo-only purposes.
However, the loop function should have been implemented better - I hope Eventide will make the knob's quantizations steps & scaling more intuitive in an update, including options for synced & syncopated time windows.
Speaking of which, this version does not feature the original's Resonance parameter (presumably because EQ vs. filters) nor the Modulation Sync switch.