Yeah I also buy some graphic novels at Kino from time to time. There's this store in tebet called 10 Comics but every time i go there its closed for some reason. So you live in the south? What do you read these days?
Ask yourself, does God not want you to ask questions? Is the earth church the same as God, are they synonymous? Is the word of God, handed down by man, not to be questioned? If you feel comfortable questioning beyond what dogma tells you, then Preacher shouldn't be a problem. If you don't, then, although you're the one who probably SHOULD read it, you probably won't want to.
Kick-ass has been a really fun series but I'm nervous as to how its gonna end. Millar often sticks his landings. I got to see some of the footage of the movie at comic con and I thought it looked great.