It seems that Ivan Seidenberg thinks Steve Jobs has a thick skin.Scott Olson/Getty ImagesIvan SeidenbergEven though Verizon Communications‘ wireless unit launched an aggressive ad campaign for its new Droid handset that directly challenges the iPhone, Mr. Seidenberg, Verizon’s chief executive, said he would be delighted to sell Apple’s smartphone.“We obviously would be interested at any point in the future that they would be interested in having us as a partner,” Mr.