"Jonny has finished my World Cup hopes many times and I want to hate the guy, but he is great for the team. He shows a lot of leadership on the field and I think we have a good balance between us," said Giteau.
"It's good to get the win - that's what we came for. It wasn't the prettiest game of rugby, but sometimes that's what it takes to win a semi-final.
"Exterior people think we have just come for the money, but players like Jonny have been around for years now and others are staying and signing new contracts. There is a real commitment and you saw that out there when we were under the pump.
"Hopefully, all that money chat has been well and truly put to bed now. We're in the final and anything can happen now, although we know Clermont are a good team with great players all over the park."
Giteau will now vie with Clermont outside half Brock James for the right to become only the sixth Australian to win a Heineken Cup winners medal, joining Pat Howard (Leicester Tigers, 2001), Rod Kafer (Leicester Tigers, 2001), Paul Warwick (Munster, 2008), Rocky Elsom (Leinster, 2009) and Chris Whittaker (Leinster, 2009).