Although I prefer to have an amp/speakers behind me pumping out the volume - I just love the feel of a big rig pushing it out - if I could guarantee monitoring & sound checks would be up to it I’d happily gig amp-less. I have done a few times when the provided rig has craped out during the day and it didn’t affect me at all, just got on with it. I’d want the monitors more for the rest of the band than myself anyway.