Touching back a bit on the sound shield, I used it in this video doing the Reel Big Fish song "Sell Out" at church. I don't remember what we had going for monitoring, but it wasn't great, (they weren't used to having horns - just the typical electric instruments and voice) and the simpler solution was to just use the sound shield to insure I could hear myself. This was fairly loud on the stage and in the auditorium. For "Sell Out" fast forward to the 20:00 minute mark - the song starts at just about 20:00 on the dot.
Between the Lines - Sell Out 10:15, Recorded on 6/2/13 MosaicChristian on USTREAM. Church