I won an S720-Sport in a club raffle yesterday. The toy transmitter that came with it is rubbish, so I've bound it to my Horus X10s transmitter. I have a Jumper 4-in-1 multiprotocol module in the external bay. It didn't cover the OMP protocol, but I upgraded it to the latest module software (1.3.3.14) and that allowed me to bind direct - no satellite Rx required. I believe this is essentially the same as loading the same multiprotocol software into a Radiomaster T16 (this is the RF board software, not the OpenTx software).
PDR