No I’m not instructor, just a dive master with some exposure to learning (assistance during and after DM intern-ship). Still based on my observations and similar discussions with instructors from my shop I don’t think it’s a good idea at least for OWD.
Any other course where you deal with more advanced and already certified divers, that don’t struggle with equipment and buoyancy could be interesting. But they’re usually already OK with hand signals and given good pre-dive briefing there should be no need for such device...