It seems that if I set up WR to require someone to become a member to comment, the redirection to log in from the comment section results in a 403 error.
Now, this is the main way anyone would ever see the log in or register pages, so it basically makes it pointless to have this configuration, as users would just get frustrated and never bother to find a way around it.
So, for now, I guess I will just have to stick with the standard spam able as all hell system. Ah, well, no matter, comments are set to be manually approved by me, so it is all good. 