I ran a folk club in Bury St Edmunds in the early 80S, Ewan and Peggy were booked and provided an Entertaining evening, the venue was packed, over 100 people, their presentation and general performance was well crafted.
I did a support for them in Leicester in 1985, there were 500 people there, again they were very professional, very polished, and provided an evening of carefully selected thought provoking and entertaining material.
Bob had a different approach,which worked well for him,he has many fans and is also very popular.
So it seems there is more than one way of doing the Hokey Cokey