Everyone else has answered your questions quite well, I think.
But, I wanted to weigh in on question #4.
I hate those comics, personally. I don't think they did a good job of keeping the laconic nature of Eastwood's character.
They actually had panels of "No Name" running to grab a rifle! "No Name" would have never run, he would never have been in a situation where he would have needed to. And they have him using two guns like Josey Wales, also.
I might be overly picky, but that is how I feel.
Just my opinion.