Would simply switching renderer to Vray and keeping whole scene in CoronaMTL and Corona lights setup work in case like this ?
I am also looking into integrating few features, namely Phoenix as well (and foam), VrayPattern (to get Geopattern) and possibly get to use VrScans at least in some capacity.
Would be good to get public list of which features are supported from each renderer in the opposite (from both sides, so maybe a good excel chart kind of).
And which are on road-map.
I am not sure how closely this philosophy of inter-operability between Corona and Vray was planned to be pursued, if it's just internal stuff to share features from shared development, or if it's still in plan to have them work alongside each other as well.
Since year ago a or so when they supported each other basic material, I haven't heard a single word on this.