My opinion is that if we genuinely believe that comics are PD then we should put them up.
There is a disclaimer and I would hope that if we were genuinely infringing copyright then we would get a cease and desist. At which point they would be removed. Anything worse would not really be natural justice.
When you consider GCD (comics.org) holds covers for non PD comics, archive.org has a massive amount of non PD material, Google stores archives of non PD material and images. Then even though we are a minnow why should we be shy of putting up material that we really believe is Public Domain?
So saying I'd prefer to keep off radar screens, but what will be will be.
I think that means do it, PROVIDING it's all double checked