Thanks Chris, yes OMT is pretty new, only first release in August last year. It may not be something relevant to QLab - depends a lot on take up from projector and camera manufacturers; no point having a communications channel with nothing to communicate with!
For those not familiar, here is a
useful video if slightly slow paced giving some technical and business background on OMT.
OMT currently only uses the (vMix) VMX codec which makes it more bandwidth hungry than NDI but it does have quality options and can in principle use other codecs [let's just hope we don't have a mis-mash of different take up].
Wait and see what happens over next year or so, I guess.