Up until now we have always rehearsed and gigged without any FX applied to the vocals. In fact we use almost no FX on any of our instruments either. I guess that mainly has to do with the no-nonsense in-your-face type of pop/rock we play.
However, after or last gig my niece said we should add a bit more reverb to the vocals.
When i told her that we have no FX unit (not even built into the mixer) she looked at me as if i was some sort of alien ;-)
I dont like people looking at me as if i'm an alien, so today we bought a second hand FX unit