I could be wrong but I understand that was one game, and he got touched up a bit. He's not a fit as a defender imo really.
What qualities are those? I really am not seeing many at the moment. Unless you're referring to off field stuff, in which case I've no idea what he's like, though he comes across as a really good kid.
OK and only my observations:
To state that O'Brien is scared is just not right. Scared of failure maybe, but not scared of the contest.
O'Brien will back himself even after a bad mistake. This is a very good trait to have. No going back into his shell.
O'Briens kicking is actually quality. I know that amongst the young guys, we cite Schumacher here also, but it's chalk and cheese.
O'Brien will take the game on, if allowed off the leash. We will see this later on.
Something hasn't quite fit this year to date, but I saw enough last year to know we haven't a 'mistake' on our hands. Far from it.