Great ! I saw them at the Top Hat, Spennymoor in the early 70s, wonderful night. They were, of course, friendly to each other on stage, but, a couple of years later I overheard one of the staff in Doug Dobells saying he'd seen them at the 100 Club and as they came off stage, arguing, one said to the other - words to the effect - "I'm gonna vote for George Wallace" "You always did!".
Maybe they didn't get on but they're still a favourite of mine.