I don't live in London, no - I'm about 4 miles away from its Northern most edge - but due to its proximity I tend to spend most of my time in London, most of my friends live in London, I'm on the underground systrm and all of my local news is London based - Watford is a strange grey area that is gradually becoming a suburb of London anyway. It certainly gives one a fairly objective standpoint to look from - constantly using the benefits that the council tax of London is paying for, but paying my council tax elsewhere.
For those that think the mayoral role for London isn't big enough - London is the biggest city in Britain, the most prosperous in Europe, one of the three financial capitals of the world, and houses over 10% of the nation's population. This is a far bigger stage than being the MP for Henley on Thames and being the Tory spokesman for Higher Education offers. In this role, there is a huge opportunity to shape the nation actually (Olympics is a pretty big national event, lets face it).
As for my 'personality' comments, there is a scary mentality in voters to go for people they've heard of, or seen. Look for example at Galloway - he's the epitome of the 'personality' vote, he has since done nothing at Tower Hamlets, has missed most of his constituency surgerys and for what? To make absurd speeches to students, and to make a fool of himself in Big Brother. I find the TV personality of Boris Johnson very likeable, and often hilarious. That's the public conception of him, but it just isn't him; his remarks about Liverpool got him sacked from his last role, and they weren't exactly nice comments. He makes remarkable off the cuff comments about the fact that the phone call he received during the middle of a speech he's giving is 'Dave' tellig him 'not to go off message'. He's a fairly remarkable figure in politics because no one actually quite believes he's a politician. He is, and a very subtle one at that - in his position as HE minister, he's come up with some fairly worrying things about endowments, and the family paying for Higher Education. But, he wraps it up in his mask that makes him appear somewhere between Barney Rubble and Yogi Bear.