I'd just like to point out to Architecture that you've just failed your part III exam, fallen at the first hurdle, do not pass go, do not collect £100...
'Architect' is a legally protected title and you can only call yourself so by being registered with the ARB. If you're off the list you lose the title!
That said I agree with your comments on rolling the two together. Why not have one one focused body that protects the profession and promotes it with one code of conduct to ensure we all tow the line... I'd'd pay for that.