I said it in my other post, but again, you don't have to kill a single Templar (except for that one jerk in a Tranquil Solution of course) to have a Pro-Templar Hawke.
I meant it reference to it being peculiar with a pro-mage Champion who sides with the Circle, as opposed to Meredith. It's simply odd that he's written as opposing her for being willing to kill the Champion, given that the Champion is killing templars to protect the mages.
Admittedly, it's more of an issue with the writing than with the character, but I do wonder if it'll be addressed. Mainly because I'm wondering if the choice between Meredith and the Circle will present a slightly different Cullen, depending on the choice made by the Champion.
As TK514 pointed out, Cullen has seen the extremes of both sides, so I think he would be a player's view into the templar mindset.