In my trained AI Overdub Voice

Yes, it can. Training your Overdub voice takes about 30 minutes of audio recording (and then a few hours of processing time). Once it is complete, you can apply that voice to your script. To preview how this would work, you can use their generic Overdub voices to test things out. Overdub is good, but, like other TTS solutions, the performance it gives isn't as dynamic as a human reader. It can believably fill in audio mistakes for you no problem, but if you want to have it read scripts, hopefully they are academic, tutorial, or otherwise more balanced. If you wanted Overdub to read a compelling, salesy script, for example, I think you would be disappointed by the dynamics of the voice. Even with that limitation, it is an uncanny technology and hearing your own fake voice for the first time is one of the strangest experiences you can have.