Not to send this discussion off into a tangent, for me it is one of the reasons why you need to define the term 'folk music' clearly.
If you are going to call yourselves a folk club and then present an evening of music which isn't in the public domain, you are issuing an open invitation to the men in suits (can't ever remember seeing Paul Brady nor Eleanor McEvoy wearing a suit, but you know what I mean!)
Jim Carroll