i played seven clubs in 14 days and did 3 floor spots, there was only one club where some of the singers were sub standard, two of the clubs allowed sheets and music stands and it was at one of those where some of the perfomers were below par, the other club that allowed music stands the overall standard was reasonable to good.although i prefer not to see music stands [i think they can create a barrier between the performer and the audience],i believe it is possible to perform well with them, if the performer has practised and makes eye contact with the audience.
i must add that all the clubs i visited were guest booking clubs not singaround clubs.