There was a UK-based photographer called Barry Thornton who used an Rollei SL66. He has passed away now, but if you are an SL66 fan you might want to look out for his books second-hand; “Elements” and “Edge of Darkness”. He also used a two-bath developing process which is quite unusual. As I recall from reading Edge of Darkness he was very keen on high-acutance in his work and he felt that the two-bath process helped with that.