Interesting - I've read quite a few of the comics. I liked the Aliens sequel a lot better than Aliens 3. The Dredd crossovers were fun.
This feels like it had an odd genesis - "I want to write Aliens Vs Knights", "Oo cool but you can't - they'd just run riot and take over the Earth", "how about on a different world?", "with knights?", "humanity has regressed or something A Canticle for Leibowitz style", "well I don't see how it fit in the established Alien universe but if you make it entertaining enough, we'll publish it", "deal!".
Good to hear it worked out nicely.
Predator in historical times is much more practical - I still want to see a Predator: Nemesis film. Jack the Ripper, the smog shrouded streets of old London town...