Well, speaking as someone who is one of those spearheading BC's embracement of communities (all day long I'm hugging people) via the RA programme (for instance: this summer at just one location within the city we have gotten around 120 mostly Muslim, inner city women cycling for the first time), I think that it's going to be helpful as we are working alongside CUK and their Community Cycling Clubs officer to help build CCCs in some of the most deprived areas of our city where cycling definitely wasn't popular! It's interesting when you generate a map of all the people that BC has traditionally reached in our city via membership, breeze, sky/local, etc (which would probably be exactly the same areas as CUK have traditionally reached), and those that the new BC community oriented work has reached - virtually no overlap!
CUK are good at building Community Groups, we are good at teaching people to ride and putting on rides - so we compliment each other well.
Of course, you may argue that this does little for the traditional hard core touring member of the CTC/CUK. But to that I would say: 1/ I can't see it hurting them either, 2/ that surely having more voters on bikes helps every other cyclist as it gives us more political sway, and 3/ am I bovvered?