I have no problem with the ad.  I saw a couple of people interviewed last night on the telly.  One of the people behind the ad said it's mainly to stimulate discussion, which being the case, he's accomplished his goal without having to drop so much as a dime on bus ads yet.

They also interviewed a Catholic Priest, who also has no problem.  The priest concentrated on the use of the word "probably", and said that's all the opening he's ever looked for in doing his job anyway. 

From what I've heard, the more main stream non-fundies are pretty sanguine with the whole business, and also see it as a chance to stimulate discussion.