I think its a good idea to be honest, and if you think about it, it makes sense...
Everyone gets to WvW with a big organized guild in their own time as and when they can play GW2 ... AND ...
WHEN we organise our own WvW team / teams on a regular night / nights we then represent CUK...
That way we always have enough folks to team up with rather than running around getting solo ganked, we gain personal experience of the maps, tactics and environments of WvW in our own play times to be better for when we do have the guild group sorted.
Another plus is that if we all represent just one other guild as a sort of Alliance, then if we see other CUKers online or at least enough for a full group and we feel like it, we CAN go off and represent CUK as a group.
Long term if there is enough interest in a clan WvW group or two then we will find we dont need GG but until that happens i think we do need something, and at least by us all focusing on one other guild as an alternate to represent we will be sticking together doing it
I mean you can have 4 or 5 'alternate' guilds so at least with everyone deciding on one means we wont all be splintering off never to be seen again
Just my POV but i think it makes good sense as things stand at the moment