I guess I will have to get a sequencer involved - or maybe I can just send program changes via midi from my iPad or another controller.
To avoid repeating the process for different patches, I think if I designate an open program as my Seaboard "slot", I can pop various programs in there. So set up as you describe, pointing all channels to program 2, if I want to use something else, just swap it into program 2.
I will let you know how it goes.
Thanks again,
Phil