I'm a fan of both bands, I think both are great - but I still think Intronaut would have been a better support for the whole tour. YOB are definitely suited to a smaller audience and people that dig their music; Intronaut are a fairly easy band to listen to for the first time and get into.
Paul McCartney (London)
Temples Festival (Bristol)
Primavera Sound Festival (Porto)
Copenhell Festival (Copenhagen)