Two Professors
Two Mad Professors
That states why you think he was given the job and where you think he is now (he's loathed internally in the party, more popular with the activists). But the point was Foreign Secretary requires many of the same skills as a PM or a Brexit negotiator. Diplomacy, negotiation, pragmatism over populism. If Boris was, by your own admission, an unsuitable FS then he'd be even worse as leader or in the Brexit negotiations.
As a negotiator,I think he would be utterly useless,he's not any sort of diplomat.But he is a very charismatic man,and would have the guts to tell Barnier where to shove his sneers,and give Selmayr a punch in the gob!