Should be some contest between him and Warne. Bet the Aussies are already working on some strategy to exploit the way he exposes his leg stump when he moves across.
It's a very hard weakness to exploit though - look at Lara, he exposes his leg stump even more than KP and jumps accross his stumps yet the only time in his career I can remember this being his downfall was this summer when Freddie yorked him.
Bowling leg-stump lines isn't the cleverest thing at the best of times, yet alone to a player who is as good off his legs as KP. I think bowling down the channel outside off would probably be the safest way to go, although I reckon he could be susceptible to lbws early on in his innings.