I've just purchased the iPad Pro but there is no way it could replace my laptop simply because of all the infuriating limitations Apple has deliberately imposed on iOS. For example I get a lot of emails so I find it useful to sort my emails by sender instead of by date. For some reason you still can't do that in the Mail app on iPad. That one simple restriction makes the iPad mail app completely useless for me so I have to use my laptop to read my emails. Tim Cook obviously doesn't get or read many emails on the road if all he travels with is an iPad and iPhone.