Normal
Re: May the mouths waterOnly problem is you still rely on the single preamp. If an input starts clipping during the show, you cannot turn it down without compensating the monitor mixes appropriately, otherwise the performers are not going to be happy. When 1 or 2 dB in IEMs matters, with an uncalibrated gain knob on the preamp, I can't forsee that working well.
Re: May the mouths water
Only problem is you still rely on the single preamp. If an input starts clipping during the show, you cannot turn it down without compensating the monitor mixes appropriately, otherwise the performers are not going to be happy. When 1 or 2 dB in IEMs matters, with an uncalibrated gain knob on the preamp, I can't forsee that working well.