Same answer as most; stands are fine/expected for jazz, orchestra, church, etc. I'd be very surprised to see them onstage at a rock, blues, pop, punk, etc show. If I ever need a chord reference (which is rare, but happens every so often with new songs), I'll just write it on a sheet of paper and toss it on the floor...it's almost impossible to see offstage, and I only have to look down to see it.