... then David Cameron must be asking the wrong question (no surprise there, then).
Johnson's a bit of a Wodehousian throwback (albeit with a chin): he comes across like Tuppy Glossop, but I think he's a bit of a Roderick Spode on the sly. Not that I think he's anything like a fascist, just that he thinks politics is only about having opinions, and that his opinions are incontrovertible simply because he has them. All he's known for managing is the house journal for self-important and self-satisfied contrarians - it would be interesting to see what sort of a fist he would make of a ladies' lingerie shop (as Spode's dark secret turns out to be): but for heaven's sake keep him away from anything big. Like buses.