Bought my first ERX to use for sending TC and a scratch track to DSLRs. The whole workflow situation means that I now no longer bother with TC. Seems the preferred process is to use Pluraleyes, so now I just send the scratch track. No slate, no clap, no mic tap, nothing.
It's a shame that I can't "watermark" that audio because I have a suspicion that one or two of your cheaper production houses use the mono scratch track rather than syncing my recorded stereo. A guy can only do what a guy can do however . . . .
John