I imagine it would difficult to find enough people with enough songs to fill 2 hours even once a month.Bit of both. Nowt worse than a shit cover of something, but everyone has to start somewhere. That said, lots of new stuff can be hard work after a while. You need to properly listen but also have the right crowd who’ll pay attention.
Ian Prowse does a Monday Club in the Cavern in Liverpool & has a strict no covers policy.