Much too new to find anyone who has gone through it - you will have to wait about another 12 months for that kind of info.
Very contentious new course as it is hugely expensive, and open to some debate as to how close to reality Oxford's marketing of your career prospects post APP might be.
I don't personally know any ex-OAT students who have got work as a result of OAT's efforts, but I do know ex-students who found themselves FO positions. Can't really see what OAT are claiming to do for new students in this respect that they didn't also claim to do for ex-students, and so far I don't see any great successes for OAT on the career front.