The issue with having a separate place for banter is that people will forget to check the forum for the important updates, so it won’t get updated, so it won’t get used, again. If it was up to me, I’d probably recommend sticking to one or t’other.
I don’t really mind how the banter happens, but I think, given time, the forum will work well enough.
Well, those are my thoughts. Take them or leave them as you will (most likely leave).