The reviews are in, sort of.

I've listed my comic on Topwebcomics and Buzzcomix, two webcomic-ranking sites. Since I joined the latter relatively late, my ranking's much lower there. Rankings are determined by how many votes you get from readers.
I've also invited people to review my comic on the Buzz forum. Here is what someone thought of it. (I don't know about using Jack Chick as an example....)
I always appreciate constructive criticism, and I don't expect everyone to love my comic - after all, if you try to please everyone, you end up pleasing no one.