Billy and Gerry together were a disaster, sometimes opposites work in a partnership, but not this one. Neither were "folkies", but both eventually found their niche and in Billy's case celebrity.
I always thought Tam Harvey got a raw deal, but suppose that's show business. Might be interesting to get some follow up on Tam, I spoke to him some time after the break up and he had gone back into the building trade temporarily....never saw him again, but in a way he was the driving force in the clubs early on.....when "turns" like Billy were viewed as patter merchants.