Not that it CAN'T be done (we were faced with the same situation in our install, based on where the stove was intended to live), and I like the idea of the part that "tribe683" referenced.
My questions to the Town Inspector and the Installer (a professional outfit that does this sort of install all the time) about the peak, were answered with concerns about the integrity of the "stringer" (is that what you call that peak board? I'm not a carpenter), and the roof itself. Nobody wanted to lean towards altering the structural integrity, and recommended that slight bend section in the attic. the straighter, the better, when it comes to piping, and yet, the slight bend in the attic is not a big deal. It's not like doing a 90º Angle out the SIDE of the house! There are folks in here who will take exception to the aspersions they think I'm casting on their setup, because THEY have 90º Angles on their system, (and they look fine,.........I've seen the pictures in here); but I'm not intentionally going after them. If they are forced to do that, and if it works for them, ......great.......but the slight angle needed for the attic, to avoid the peak, will give you less trouble, (imho) than more extreme angles, with regard to creosote build up.
The only question was, which side of the peak to put the pipe. I preferred the front, facing the street, (some of course, prefer the back), just because I'm proud of the fact that we want to use wood heat, and be as free from foreign oil as we can. I wanted my neighbors to know that, and perhaps plant a seed in THEIR minds, about the ways they can be energy "green" and less dependent.
So, based on the best advice around, I didn't go thru the "stringer."
-Soupy1957