Some how I find it hard to belive that having a House Majority leader who appeared to be beholden to McCain for winning the Leadership job would be in Conservatives best intrest. But, Pence did give the nod to Shadegg, and that carries a lot more weight then McCain's goofing, so maybe you are correct. Guess we are going to find out.
The deal with McCain is that he does work to stop conservative gains in many critical areas, but he wants the recommendations of "powerful" conservative voices when he runs. He's trying to bridge connections. It's why he "endorsed" Blackwell in Ohio. Blackwell wins Ohio he'll be an influential force in national politics in '08. Though he waited to endorse Blackwell until it was clear he was the first choice.
Endorsing Shadegg doesn't necessarily mean a thing about Shadegg, other than McCain wants more buddies to add to the list of those that "endorse" him to primary voters.
Whereas McCain endorsing Cameron, new leader of Tories in britain, IS an example of McCain trying to push his RINO agenda forward overseas.