He's a solid off spinner isn't he? But he was yapped up like the second Laker on here for a couple of years.
Australia is a terribad place for offies in general. I don think he's bowled badly this series, but there's been an obvious plan to get after him which has largely worked and has effected England's plans pretty badly, because he hadn't been able to bowl those long, tight spells which build pressure for other bowlers.
Assuming England weather the early stuff from Australia, I expect them to go after Lyon in a similar way this test.