Sorry but I don't consider it to be in competition with the festival.   
I suppose what I really want to say is that the people who go into singarounds often don't bother with concerts very much, if at all -i.e. I wouldn't have been going to the concert anyway and there must be other like minded people, who would make the effort to go to a session but don't really enjoy concerts. My other 'beef' is when festival organisers send artists into SARs to perform for 20/30 mins.!! Using up good SAR time - if artists want to come into SARs they should be given the opportunity to sing the same as anyone else, even Sy Khan sat all evening until it was his turn to sing at Beverley!!!